Colt Big Vibe
The Colt Big Vibe is exactly as it says - its huge, its thick and it vibrates. In fact it was so big and thick my other half complained his ass was sore after I put the toy in!
The toy is very well made and sturdy, the handle grips well and the length of the cord is a plus. On the flip side, there is no On/Off switch and the intensity toggle doesn't depress well. The toy can only be made to vibrate or twist using the sliders, so one wonders if this will have an effect on battery life.
However, I noted that the battery compartment was loose (a manufacturing defect?). The required AA batteries, 4 of them, had to be angled before they connected and the toy started vibrating. It may also be because this was a product discounted owing to certain deficiencies - the product page does mention this. But the toy does work and is a bargain at this price.
Bottom line: be very certain you or your partner is experienced at using toys this large before you decide to go for the Colt Big Vibe.