After using Palm (Pilot, III, Visor, Vx, Treo 600, 650, 680), Sony (N70), Nokia IT (N800) and Windows Mobile (Toshiba G900 w/ 800x480!) with resistive screens.. I can't say that my overall experience with resistive screens were superior than the comfort and practicality that I get from using the capacitive screen on my iPhone (currently 3GS).

One handed usage is natural with the thumb on a capacitive screen, you don't need to bother with stowing\unlatching the stylus, and the performance is great. I don't get why capacitive screens are getting so much !@#! here.

PS: note that I don't handwrite or draw on my devices, so I've never missed the single superior feature that resistive screens have over capactiive.