SororiShinzaemon

The warm sensation multiplies the pleasure a lot more than you'd expect. For around 10$, you can utterly transform your experience with a more realistic feeling. Seriously, imagine drinking a hot chocolate on Christmas day; with all the joy, warmth, and comfort.
While it takes a good 5 minutes to warm up the toy, it's a must-have for anybody collecting onaholes.

I picked this up as it was on discount and I can easily say that it was worth the one or two dollars I spent (I don't remember exactly how much).
The inner texture feeler thingies don't make a huge difference when stretched, but otherwise its pretty good.
Also quick note; there's lotion built into the product and I stupidly decided to wash it before use, wasting what was actually very good, also extremely slippery lotion. Seriously, you could pour some on concrete and do a belly-slide (Do not recommend). Interestingly, for a single-use item it's quite durable as well and hasn't broken yet.
In all; if you're shopping for something else, be sure to throw this in; it's only a buck, or two bucks or something.