The advancements in harnesses has been huge the past few years. Like you said, light weight and comfort have been huge advancements. I don't think that you could go wrong with any of the latest offerings from Muddy, Gorilla, HSS, Spider, or Summit ... just to name a few.

I'm still running a Summit SOP Fastback. But if I were to look into a new one right now, I'd probably go with a Muddy, simply because I run some of their other gear and am really impressed with the quality of products that they are producing. But again ... I don't think that there are any that you could go wrong with of what is being currently offered.