the only advantages of capacitive screens are that they are capable of multitouch and they often have a glass-surface. although the latter is not necessarily an advantage.

i never owned a device with capacitive screen to be honest, but i now how one feels like due to the htc magic of a friend of mine.
and really, i didnt realized its a capacitive screen until my friend told me.
obviously the screen "felt" different, you could feel its much more stiff propably because of glass or hard plastic, but other than that i didnt found that it was much different than my s8000's resistive screen. minus the multitouch, that is.
all my touchscreen-devices (samsung jet, nintendo ds, nintendo ds lite and n900 in future) had resistive screens so basically thats "all i know" anyway.
i'd like to have multitouch, but on the other hand, i dont want to loose the stylus.

an iphone without the phone is an ipod touch.
"itouch" makes you sound like pedobear :>