@beardalaxy I have a DX7s, which I love, but am not sure if I can recommend to somebody who just wants the features you speak of. You're probably better getting something modern of the mid range. Such a keyboard will have everything you want without the downsides of my DX7s's senility.
@beardalaxy I was considering getting one of those, they're silver iirc, but the seller wanted 50 dollars, which was just too much for a generic low-end Yamaha imo.