I think you missed a point. X3 already has a 3000mAH battery, and X5 might go with a even bigger battery @ 3500mAH. The battery iBasso plan to used on DX50 is only 2100mAH (*for S3, a.k.a. i9300 battery IIFC). While the idea of an easily removable / replaceable battery is nice, it comes at the cost of both size and capacity.
If the batteries are easily & quickly swappable (as they are in the Samsung phones, for example), then it's irrelevant that they're smaller capacity (and I'm not pushing for the battery to necessarily be one from a Samsung phone, by the way. I don't care where it comes from just so long as its readily available and easy to swap).
Oh, come on, the difference would be neglible; just a couple of millimetres.
Again, I think you are overstating the amount of difference. Sure, there might be a difference, but nothing at all to be concerned about.
FiiO can go will a custom built battery (like that on HM901) but that will increase the cost (which is why I assume iBasso uses an existing battery for DX50) and still it won't be as big as a fully built-in one. I really don't see how that can be a totally good thing - yes, you can replace the battery when it is drained, but that means you need to carry extra battery and keep them in charge. If you are already willing to go to that extra length, why not just carry an USB power bank with you instead? At least you can buy a big enough power bank not just for X3 / X5, but also for your smartphone.
No, I don't ask for a a custom built battery.
* Carrying an extra battery (like a Samsung phone battery for the DX50) is easy - they are tiny and lightweight and fit into a jeans pocket so easily you hardly notice they are there at all.
* A powerbank battery is considerably larger and heavier than a phone battery. A powerbank battery needs to be higher voltage in order to be able to 'push' charge into a device battery. Extra voltage means extra size and weight.
* What is the point in making the DAP smaller, if you need to carry a bigger battery (i.e. a powerbank) just to keep the DAP battery charged-up while you are walking?
* A powerbank battery means you have to take time to charge not only the powerbank (at home/work) but also, while you are walking, you need to 'charge' your DAP / Phone battery. I don't want to have to charge my DAP or Phone while I am walking - the whole point is that I want to do all my charging at home or work, not whilst I am walking. If the DAP has a swappable battery, I can simply keep an extremely slim and lightweight spare battery in my pocket, and not even worry about if my DAP battery runs out. When it does, it takes just a few seconds to swap the battery and start using the DAP again. No waiting for the DAP to charge.
The best scenario, in my view, is to have a total of 3 batteries. When I go out, I have a battery in the DAP, at any state of charge, it doesn't matter, and I carry 1 spare battery in my pocket. The 3rd battery stays at home (or work). I use the DAP without worrying about the battery level. If it runs out, no problem, I swap in a spare battery, from my pocket, and I can carry on using the DAP immediately. Meanwhile, at home (or work), I have a charging dock that always has a 3rd battery being charged. When I arrive home or arrive at work, I just swap the flat battery into the charger and put the freshly charged battery in my pocket. I never have to check if my DAP needs charging. I never have to carry a heavy powerbank battery. Total freedom. If I want, I can even keep a spare battery both at work and at home. I wouldn't need to, but the option would be available to me if I wanted to do that.
As much as I love the SQ of the DX100, the thing used to drive me crazy with such poor battery life and always having it run out when I was on the train home etc. And I would never have carried a powerbank with me because they're unnecessarily heavy. On the other hand, I easily carry a spare battery for my Galaxy S2 and easily swap it whenever the phone runs flat.
No, I don't find that at all funny/strange.
I don't understand why you are telling me something so obvious.
None of this is personal, I'm just responding to your questions/statements, that's all.
Clearly, we see things differently. I really like to be able to swap spare batteries when I am walking/traveling. I hate having to mess around with charging devices unless I am at home or at work. I don't think that it is at all strange to have this opinion.
I criticise Apple for doing the same thing with their new Powerbooks and with their iPhone. I have an older Powerbook, which does have a swappable battery and it is so much less hassle. My friend has had an iPhone 3, 4s, and 5, and he has had endless trouble using it for business, because the damn thing is forever running out of battery power when he needs it most, and he doesn't have time to charge it with a powerbank. He needs to be able to use it immediately. Same goes for the HTC One, which is a beautiful phone and I feel it is actually better than the S4, but it does not allow battery swapping so I refuse to buy it (it doesn't allow memory cards, either, but at least data can be dumped direct to a USB stick in the latest versions of Android).
Speaking for myself, I can see that I really, really like James' attitude to business, and I expect the X5 will be an excellent value player, but if it performs about the same as iBasso's DX50 and the DX50 lets me swap batteries when I need to, then I am completely serious that that would be enough to make me choose the DX50 instead of the X5. Maybe not everyone agrees with that opinion, but I am certainly not alone in having this opinion, either.
Edited by Mython - 5/25/13 at 11:52am