I have one I train with so I don’t wear on my other packs.
Good:
1-they are as durable as anything out there
2-modular accessories are extremely handy, rifle scabbard, batwings, duffel etc
3-very simple and fast to use
4-very quiet while hiking
5-Budget minded, batwings, dry bag and you are hunting.
6-I like the solid frame of an external with features of an internal
Bad:
1-load lifters are non functional and put lots of pressure on tops of shoulders
2-very narrow, can be annoying getting a large load stabilized
3-for large trips (7-10 days) room to haul camp, food, meat etc out can be difficult.
4-over 50 lbs isn’t as comfortable as the higher end stuff
All that being said, if you aren’t wanting to blow a ton on a top tier pack, can deal with some top of shoulder pain under large load, they are great. I have probably 1000 miles training with 50 lb sand bag in mine, several hunts, still looks brand new.
I choose another brand just because I like it, but they work fine, just not the “best”. If they would just take a few pointers/complaints and take the top of the frame up 3-4”, add a little padding to the straps lol his could be a great all around set up. But they don’t seem to listen to us for some reason