I like the screen on the Galaxy phones. I don't like the slider form factor, though, for one reason; cases. I had a pre and getting a decent case for it was almost impossible. I also find myself typing faster on the touch screen keyboard than I did on the hardware keyboard. (maybe that was just the Pre, though)
I had an Instinct and it was ok, but I have heard bad things about Samsung's support after the phone has been released. I hate to say it but I think after Froyo is released for it they will move on and forget about updates. I can't really see HTC doing that.
And I like the kickstand too.