I thought they were just a gimmic (and I guess they pretty much are) but a buddy of mine had two 4.5-14x50 and when compaired to my 4.5-14x40 it blew it away in low light. I'm not a fan of a large objective lens because of how high they need to be mounted. He had basically the same set up mount wise with beter performance. I bought one of the 6.5-20x56 VXL's and it's a great LR low light scope. I still had to put a cheek piece on to get a proper sight picture. With my 20moa rail I have enough adjustments to have a 100yard zero and get out to about 1900yards. The only thing I don't like about it is the VH reticle and wanted a TMR, but you can't get the reticles in the VXL changed.