You might run into some problems with this due to the massive influx of mature vs. young crap that hit the market a while back. Many link sites....mine included...won't list those sites anymore.
Some of these were one on one...a young guy and an old woman. But, frequently these were groups of VERY young looking guys gangbanging an old woman. Add in the cheesy Russian wallpaper too...perfect
I've also seen the same kinds of sites with very old men...frequently in groups...banging fairly young looking girls. Personally, I wouldn't list these either. The content is usually very poor...cheesy russian wallpaper...and something about the concept just don't smell right.
However, IF you're talking about middle aged men...40+ and hot girls...that's fine by me. Once you get into a group of 60+ year old guys gangbanging a hot girl...that's a decline for this reviewer