Well, I got curious and put a condom on my wife's gspot vibe. I tried to apply the principles of relaxation and muscle control to guide and control the vibe but came up blank; there was absolutely no pleasurable stimulation. From now on I'll stick with my aneros as less is more it seems. My wife and I don't use the vibe on her very often because it causes her to go numb and usually limits her to one orgasm a session, whereas she will have 2-5 without it, unless we're doing a quickie. Maybe I was experiencing the vibe numbing effect that she notices.
ive noticed the same thing, bigger is definitely not better, unless its the progasm, though that can only work for me once in a while.
Yes I have four different aneros models and my non-aneros toys include an Njoy Fun Wand and a Tantus General dildo. I love playing with both and the General is amazing but it simply doesn't provide the same kind of prostate stimulation as my aneros toys. It is amazing in it's own way but I wouldn't compare/substitute it for aneros. The aneros models move in away typically with nowhere close to as much pressure as manual manipulation will provide a gentle massage of the prostate. Sure I can manipulate the General in a way to nudge against my prostate which is very nice but not the same. If anything the significantly smaller 1 inch head of the Fun Wand is much better for controlled manual prostate stimulation. Manual manipulation of the aneros toys themselves don't really give much stimulation either as it's relatively hard to manipulate due to their shape. Different ways to pleasure the same general area in my opinion.
A few hours after trying the vibe I tried the Pro. Jr. and was able to get some good sensations, confirming that less is more.