425 vs. 430
To add some context to this graphic:
More isn't always better for a music player.
Since we're on the 28nm process, and don't have a lot of the low power efficiency that we've seen in the newer nodes, sometimes you may want the 425. Especially when talking 28nm, the battery life gains you get from reducing cores you weren't using anyway when apps aren't coded to take advantage of 8 cores can be helpful.
I generally like the hexacore design as the best trade off between performance and battery life. This is what Apple does in their current smartphones but I don't wanna get on to an off topic rant on how much I love the SoC design(im an android user, I don't own any apple products other than old Nanos for transports for the car. So it's an soc thing not at apple thing).
As long as you don't lose too much battery life going with the 430, then it's cool. As we know the 425 already does well for a music player, as long as the 430 isn't a significant impact on battery life its not a big deal. If you're using it as primarily a music player, I wouldn't factor it into my decision beyond looking at battery life. It's a nice to have along with the 4gb of ram. Given that and other specs, it's justified that it sits at a $100 premium over the competitors recently released. Unlike the Ibasso 160 which drives me crazy pricing in this bracket and delivering a horrendous cpu. $70 more gets you all of these specs... .It's a no brainer to me.
The next jump soc wise is when they can get any remotely newer node(smaller than 28nm, which is very old for cellphones sized devices). But right now, it feels like we've escaped the horror age of laggy meh daps. After the hiby r6 I knew things would only get better.
Within the next 2-3 years, interface won't be something we worry about anymore. It'll finally just work effortlessly on all devices. For now, we should really not reward other manufacturers for giving us slow terrible specs to power our expensive daps.
Os wide bit perfect android with decent snapdragon processor will soon be the minimum people accept. I can't wait.