I have no issues with my Focal Spirits, they are my favorite headphone at the moment. I mustn't have a big head. They compare favourably in SQ to things that cost in the order of 5times their price. I don't throw my headphones around either so I have no issues with cracking. Really, if you're going to throw them around use the hard case that comes with the Ones... Or, don't be so careless with expensive things! I've never managed to crack the screen on my phone, or my headphones before, or yet.
All I can say is try them on your ears... The Focal Spirit Ones have slightly larger cups, but have more receeded highs. You can use a parametric EQ and a V shaped EQ to fix that later issue. They are all pretty damn neutral, the Professional has more clarity in the highs, the One has more bass reflex and receeded highs, but you can EQ it out on the highs using a V or U shaped EQ until it makes your ears bleed from the clarity of your highs. That's good and bad, a sound booth guy would tell you not to use a V shaped EQ for that very reason but meh... whatever. Apparently if you lift your highs above 12000hz or whatever too much it can be a bit tiring and it is, but if it works? I'm happy to put up with them like that if clarity is an absolute objective, they have a copious amount of headroom for EQing. Raising the lows, dropping the mids and raising the highs seems to work.
The One is a little cheaper now, the Professional is a better headphone out of the box, but both of them in terms purely of SQ are more than capable. The One requires a bit more tweaking, it's not muddy, if anything the one is a little bit boomy on certain tracks which are highly layered, like for instance CeeLo Green, Bright Lights Bigger City, but I don't know if you listen to that, I don't find it a well mixed track but its good for testing boominess. A properly master track that should be boomy on bad speakers such as Michael Jackson - Billy Jean plays perfectly well, it's neither boomy or flubbery and the intro has a tricky bass section. The bass never takes over the entire stage, the stage is there on the One it's just without tweaking its like the stage is still behind the screen and you're not quite there. The one has a hard case so you can't break them, but you could get the same case for the Professionals.
At the end of the day it's your ears and you might not see any of these issues with them on your head, try them first. The good thing about these out of everything really is that they're 32ohm drivers, and so you don't need any dedicated nuance to get them to sound good, which is why they've become my dedicated iPhone headphones I walk out the door with when I don't want to bother with an amp. They reach 70db with just a quarter of the volume on my iPhone which is more than a little dangerous as you're tempted to go further, but that's the loosing battle, you can't have 100db on years like you can have 100db on the floor in a moderately sized room with some book ends, you'll end up going deaf.
One of the hard things I've had to learn is just to turn down and expect to get clarity when I'm turned down, I compared these to Sennheiser Momentum 2.0s and they have a flatter listening stage at lower volumes, comparatively the Senns tempt me to turn up to what would otherwise be volumes that lead to ear damage over extended periods of time to get a flat sound.
At the end of the day these sound about the same as an Ultrasonne Edition 8, and how much are you willing to pay? Pretty good substitute for about 1/5th the price. For comparative sake https://www.bhphotovideo.com/c/product/609492-REG/Ultrasone_EDITION_8_RUTHENIUM_Edition_8_Closed_Back_Stereo.html and compare fairly well with the Sennheiser HD 800s again above the same budget. I tried a fair few headphones before settling on these, I couldn't justify HD800s for the same job. They were better, but not 5times better.
