The somewhat blunt bulbous tip always requires a bit of pre-stretching for me, but once it's in there the fun begins. I would agree with the other male reviewer who said this toy lacks the firmness to really press on the prostate, but I enjoy this toy's flexibility and shape for general probing and thrusting play over direct p-spot focus (and I'm not really a big fan of thrusting usually). Once you get the bulb in, the thin smooth neck of the toy makes further penetration a breeze, whether it be shallow or deep, slow or rapid. The handle makes fine control during solo play a dream (no more sore hand!), and the curve of the neck means you can work the bulbs around deeper curves that might be uncomfortable to push past with a normal straight dildo of the same girth. The only criticism I have for the G Force is I wish the backside of the bulb had the same gentler curve of the tip - it can sometimes be a little unpleasant to pop out if I didn't stretch with a bigger toy much before hand.
I won this item years ago in a basket full of silicon toys at an event in San Diego. I've had it for 12 years, it is wonderful to play with. I use it as much as I can and it looks no different today as it did 12 years ago it is awesome.
The G-Force is a wonderful g-spotting toy, and the handle makes it supremely easy for even a novice g-spotter to use to good effect. It has a fair amount of bend in the silicone, so it's a lot less stiff than some g-spot wands: if you use it slowly you can keep it pretty gentle. The textured grip is comfortable and not slippery even if you get a bit of lube on it.
Sped up you can get some really pleasant thrusting without tiring out your hand/wrist -- the extremely smooth, rather thin shaft isn't going to fill you up or give texture stimulation, but the head is nicely angled and is bulbous enough to still give a lot of sensation especially when used fast.
For really intense g-spot stimulation, I find the G-Force performs best with a partner, who can use it at more extreme angles. The insertable part is reasonably long, so depending on your cervix length, be careful/communicate well!
Bottom line: This is a fun, versatile toy for people with vulvas. It's good for mild-medium solo g-spotting or vigorous solo thrusting. It's WONDERFUL for folks with issues with mobility or hand/wrist use that make repeated thrusts with a simple dildo painful or difficult. Also lots of fun for partnered play. If you know you like hard direct pressure on your g-spot, go for something more rigid than this. If you're looking for a more traditional, more filling dildo, Tantus makes several of those with handles too!
The first thing you think when you see this toy is, "Look out, prostate - you've had it!" But the toy is too flexible for the kind of pressure needed to properly stimulate the p-spot. It's another toy designed by someone who has never actually used toys, something every toy maker is guilty of.