I bought a PSR293 it was nice – for a short period, then it sat in the corner.
The Casio for new, and a PSR2000 or 2100 I feel is the best way to go.
Casio for the dollar is great. My choice would be a used top end keyboard, it will give you many of the good features. Since I have had Technics and Yamaha I would be looking for variety, something different, maybe Roland G1000 like Fran has for under $400. Wow, I can’t believe I wrote that. haha

John C.