No doubt the Portabag is the best built single bag I've used and the straps are certainly not
crap. But like different sized pants, shirts, etc. - they just don't fit me and dig into my shoulders. No biggie. Still a great bag!
Edit (and not a reply to the quoted text): I really like the storage capacity of the Gator Pro Go Dual and may give that one a shot. The Mono dual got repaired, but I've got a coupon at Musician's Friend and some points just burnin' a hole in my pocket.
Edit 2: Pulled the trigger on a dual Gator Pro Go bag. With the coupon, as well as the points I had, came in cheaper than a single bag. Excited to give it a whirl!