The roland go piano looks like a piano cut in half. It doesn't look right in my opinion.
Well, you said "61 keys". That's what it has. There aren't many "features", so there aren't many control buttons / knobs / sliders.
There's nothing wrong with the Yamaha PSR series. Make sure that the model you get has "touch-sensitive" keys, which play louder if you strike them harder. As I remember, the PSR 2xx models don't have those, but the 3xx and 4xx models do.
I think, in your price range, there aren't any instruments with 88, weighted-action keys. They'll have fewer keys (61 is a working minimum for two-handed playing, IMHO), and they'll be "synth-action" (spring-loaded, rather than weighted). If you become serious about playing _piano_ music, you'll probably transition to weighted keys eventually -- there's some re-learning required.
Any of the small keyboards sound _way_ better through headphones, or with outboard amps and speakers.
, Charles