rim width question

I’m building up a new 20" wheelset soon and am not sure if I should get a 1.5" or 2" wide rim. I’ll be using tires between 2.2" and 2.5" wide. I like the tread options I have with the 2.2" tires so I’ll probably be using those most, but I might try a 2.5" at some point. What kind of ride difference could I expect between the two rim widths?