alphadynamic wrote:Brass is weak in both tbh, but to my ears I like the Motif a bit better
Much of the best brass in the Kronos is in the EXs3 library, which comes standard on the Kronos hard drive, but does not automatically load (or at least not all of it), so it's possible you may not have heard some of the better brass. (Kind of like what Nord does with their free downloadable sample library, Korg provides more sounds than can possibly fit in memory at once, so you don't necessarily hear all its best sounds out of the box... though unlike Nord, it doesn't take much time to unload some sounds and load in others, and you don't need to hook up a computer to do it. Korg now also permits you to install an extra gig of RAM so you can keep it all loaded. The only downside is that the initial boot then takes a few minutes, compared to the quick boot of the Nord.)
alphadynamic wrote: I also prefer some of the electro-mechanical keyboard models in the Yamaha too.
That's always subjective, but I think the EPs in the Kronos are way better than what's in the Yamaha. In fact, I also think they're better than Nord's!
The Kronos and Motif XF are both great boards, each does some sounds better than the other, and people, obviously, can even disagree about which one does which sounds better, so that's personal preference. Other than sounds, there are some practical differences, like the 61 and 88 key Kronos are much lighter than the comparable Yamahas, and Yamaha offers an unweighted 76-key version while Korg offers a weighted 73-key version.