This is a vibe meant for clitoral and g-spot stimulation. The bullet sits inside the clit attachment which delivers great vibes to the clit, however the g-spot does not work terribly well. The rotations in this vibe are in the shaft (rather than the whole shaft rotating) which really didn't do a lot other than make it look really cool.
I am always a fan of silicone (remember it is not good for sharing). It has great texture that can help with stimulation. This particular vibe is also ribbed which also helps with stimulation. As I said above the rotations in this are just around the shaft and is not very noticeable once inserted.
This is a large vibe and is probably better for more experienced users. The control panel is easy to use once you learn how but does have many different buttons and controls so it takes some experimenting to find what you like.