The Divide in its current form didn’t exist when I bought my Unaweep, but I would be quite tempted by it now.
I did quite a bit of cutting on the Unaweep after my initial trip with it to get rid of all the loose straps since I wasnt using a Talon. I cut the top two side compression straps and removed the top “V” compression strap. I left the bottom side compression straps to make my own “roll top” closure and provide vertical compression. I also cut the load shelf off the bottom. I like simple packs and there were too many straps I had to deal with on the Unaweep with no Talon.
The HMG is a very aesthetically pleasing pack and I really wanted to fall in love with it, but it just wasn’t as comfortable to me as the SO. Perhaps the perfect marriage would be the HMG pack bag with the SO frame and suspension.
I always use water bottle pockets and the HMG water bottle holders leave something to be desired so if I was going the HMG route, I would strongly consider the Zimmerbuilt water bottle pockets for the HMG.
The Talon (which I don’t have) seems like it would be perfect for strapping awkward or bulky items to your pack, however I would want to pack everything inside my pack if possible. If the 4800 or Divide isn’t big enough they always have the 6300.
The Unaweep is a straight cylinder, like the McHale LBP. The Divide is tapered like the HMG. I am not sure if one is a particular advantage over the other but it is a difference that should be noted.
Do you like a front stuff pocket? If so the Divide is the choice, but some people prefer a cleaner pack and thus no pocket. If you go the Unaweep route and do not want to use the Talon, then some trimming may be in order, though it isn’t necessary if you get creative with your straps. I eventually decided that I was never going to use a Talon and thus would be better served removing the straps and load shelf.
With all of the trimming I did, I lost most of the horizontal compression of the pack but that doesn’t bother me as not only did I remove the horizontal compression from my previous packs but also my big trips require bear canisters – usually a Bearikade Expedition – and thus my pack volume doesn’t change much between day 1 and day 12 of a trip. That may not be the case for you where canisters are probably not required.
I know lots of people love the HMG packs and I can see why, some things they have done very well. I think it would be a lot better pack for loads over 14KG if they added load lifters and beefed up their hipbelt. The SO packs are amazing in what they can do and as they continue to make refinements in their pack bags are only going to get better. You might call or email Kevin, Nathan, or Luke at SO and talk to them about your needs as unlike me, they can better compare the Divide with the current Unaweep.