I’ve been through a lot of knives in my day. The one I’ve been most impressed with for comfort of use and ruggedness, at least for me to this point, has been the Demko AD20s. But, they’re not usually inexpensive.
IMO Cold Steel makes great, strong knives capable of hard work at a decent price point. I’m a huge fan of the 4Max Scout as it is a bulletproof beater, but I understand not everyone likes carrying something that big and heavy. The AD10 is a great option, but still beefier than some like, but I don’t think it’s unwieldy at all. The Bush Ranger is very comfortable and lighter than the AD10.
Of the Spydercos, my picks would be the Manix 2 XL or GB2 for harder work. While I like the PM2, I’ll agree with posters above that it’s not the most comfortable if you have to bear down on it for longer term hard cutting. The Shaman and Bodacious seem like they’d be better, but I don’t have any experience with either of those.
As for Benchmade, everyone seems to overlook the Presidio 2, but it may be their most underrated model as a practical user.