One of the great aspects of being a Yamaha owner is that, with few exceptions, all those older styles will play in the newer Yamaha models, and many sound even better than the original version because of the newer voices. And, all the legacy voices can be played as well, which is a big plus for some of us.
So, I really never miss the old styles when I upgrade - I still have them!

Gary
Hi Gary,
And vice versa too as far as I'm aware, maybe not all of them , ie some of the T4's won't play straight away without a bit of a tweak, I think t4 has voices that my PSR doesn't, but it's always been a great feature of the PSR's that a newer model style will load into an older model keyboard. Can't do that with my korg, the old styles will load into a new keyboard, but a new style won't load into a prior generation.
Gosh, don't know how you keep track of all those styles, amazing.