Yeah, thanks, my wife keeps telling me that too! I guess must be something in there!
Of course there is nothing weirds with liking the previous model better - just look at Technics guys how happy they are with their keyboards, or G70 players who do not even think of changing to anything else. So, I could only be happy for you being happy with Pa3x.
For me, the new generation of Pa did address something I wanted to hear in Korgs, a little better drums, with more natural feel to it. I think they did it very nicely with Pa4x and then Pa700 followed. And I was lookin long and hard to both Pa700 and Pa1000, but then I decided much to my own surprise, to try Yamaha this time. I had Korg, I had Roland, now I went with Yamaha - all MOTL arrangers, because I was always looking for the best BANG for the BUCK. I love this american expression! And I just wanted to try the smoothness of Yamaha styles this time around instead of glitchiness of Korg's fill-ins for ballads.
And because I am not in the full-time work with arrangers, I could never justify the top costs for the TOTL, even though of course I would have love it. But I am at peace with that.
Then I suddenly found a price drop for the little S770 that I just could not refuse. Brand new, with strong bag, stand, pedal, headphones - the regular pack, for about $900 - that is a very good price, in here at least.
Getting used to it, as with any other new keyboard, is quite a process, but I take it slowly and it is in fact very enjoyable. This little thing is not bad at all, and while before really looking at this Yamaha I thought is only Korg who has great value for the lower costs keyboards, I got to understand differently. Actually all of them follow the same principle: paying 80% more for something will only give you at most 20% better quality. I could write a whole essay about this, but other people, wiser than me, did it already.
Anyway, I guess just as you are happy with top last gen, I am with middle/low last gen.
All the best!
Adi