I know I've read a few sections discussion STPs or packers and such and so on. I personally got the Australian made prosthetic, Jacob I believe the guys name is.
Personally, they give you a time line, this actually took much longer then the time line to receive in the mail. I didn't think too much about it. I bought the adhesive, the hair fx, everything I thought I would need through the people. I would like to mention that they were very expensive that way. You could buy the same adhesive and such for much cheaper through the distribution sites.
I got the dual with sack, and a lighter skin tone. The tone is slightly off but it's not the end of the world sort of thing. The thing was really heavy though, so maybe my body didn't take the adhesive or what but it didn't seem to stay on for longer then a few hours, it would just slowly kind of... come on glued. I originally wore boxers, sort of hand me downs, and things that I had for a long time. But switched the boxer briefs for more support for the prosthetic. It is well made, but the dual as a set of pipes or something inside that allow it to clicked into an "aroused" stated and a flaccid state. The flaccid creates a rather large bulge but after a LOT of trial and error I got a system down that made it easy. I'm a smaller guy, so it took some effort. However, the pipes within broke within 2 days. I don't know if it just popped out of tracks but I could never get it to work how it used to since. I could have easily talked to the company but for me that was a lot more effort then what it was worth. I was happy with what I had.
The prosthetic has given out of the years, about 2 years now, and is pulling away from the tab, but I no longer use adhesive since it never worked out for me. I fashioned a harness to sort of keep it in place with the boxer briefs as support. The quality is really good, I admit. They work well for sexual endeavours, a little tedious in packing until you get used to it. But overall, I am not unhappy with the purchase. I am a little unsatisfied with a longevity. Not to mention the sack part were completely flat on the back. I wasn't sure how I was supposed to glue that or do with that. In the end the kind of... fell apart and became no existent. It also dirtied very easily for the glue, sides, everything, permanently suck with grossness. But they never last forever.
So for people that have been curious about this certain prosthetic at all, I have a couple years experience with it. I don't know if I'd recommend it. It's expensive, but they work well for a time.