As the owner of a samsung j900 previously, i found that this was extremely easy to use as the menus are virtually the same as other samsung phones, just with added features specifically for the phone.
The touchscreen is pretty durable but responsive too, i found it much better than the HTC magic, for example.
The features of this phone are very good, the widget on the main menu is very good and the camera is very impressive, with 8mp, panoramic, macro, flash, smile and face detectors etc it's great for snaps out and about and produces sharp images. The video does also.
This phone is great for multimedia and internet browsing, as well as its incall and video calling features, i particualrly liked how easy it was to use.
The only drawback is if you are a very heavy multimedia user and constantly play music in the background, text a lot, call a lot, always take videos, the battery doesnt last for more than a few days, however the benefits outweigh the drawbacks!
thoroughly recommend!
:)