Looks like the zipper on my Mark Epperson pack has been tugged too many times, I'm in need of a winter pack, sometime after the first of the year or when I quit buying vintage stoves. I can get by for awhile if need be. My panel loader is I believe 5500 ci, it holds more than my Golite Gust did which was 4500 ci. Looking to get a top loader with a few side pockets and capability to tie on snowshoes and/or a shovel. Is there a comparison chart I can slim down the selection on and start some research? The Epperson pack is a internal frame. Thanks. Puter challenged here so give me some good links.