I am considering both the 4.5 and 6.5 in the vitality series. Could anyone help to lean my decision one way or the other? I have a shallow g spot, so It looks like both would be good for this. I'm a little concerned about the 4.5's girth. I have a glass toy with a 1.5" diameter and find it a little difficult to insert still. Would a silicone toy be easier than the glass? I do however like the idea of the clit part of the 4.5. Decisions, decisions... If you own or have tried both, your thoughts would be greatly appreciated!!!