The keyboard quality is a big component of the overall cost of these instruments, and so it is likely that lower cost instruments will not have the highest quality keyboard. It’s a cost trade off, and it’s hard for someone else to tell you what would be satisfactory. Unfortunately, you are going to have to try for yourself. And it’s not just the feel, what about the number of keys. Will 61 keys really be ok?
The piano sound is another matter. That is usually also quite closely related to price as well, although price for price the piano sound on dedicated electronic pianos will usually be better than on similarly priced arranger type instruments.
Bottom line though, if you are buying a PSR - EW.. mainly to have fun playing with accompaniment, you will probably enjoy it. But if you think it replaces a piano, you will probably be disappointed.
Mike