I also have a Summit, and really like it. I have the Cobra model which I don't think they make any more. It is basically the Viper without the bar around the front. I like the open front for bowhunting, but I use it for gun hunting as well, and I have taken at least one deer a year from it every year I've had it. It is easy and light for backing in on public land.
I have heard alot about the Lone Wolf, but looking at it in Cabelas it doesn't look all that comfortable for sitting to me, and it almost twice as much as a Summit. /ubbthreads/images/graemlins/confused1.gif