The Scythe is more appealing to me for a few reasons.
1. reportedly suppresses better and it should because it has more volume
2. a little lighter
3. almost as short if you use a flush end cap (I think its 0.1" longer in that config?)
4. Options to go flat end cap, single port, or 3 port anchor brakes depending on one's priorities on the suppression vs recoil reduction spectrum
5. Available at a variety of retail options
I own a scythe have not used a backcountry but it seems like a solid can as well.
Finger prints can be done by mail or you can go somewhere that can do them digitally (not a CA "kiosk" like SS but somewhere with the equipment to log digital fingerprints). I just did paper fingerprints at home and mailed it to them. The rest of the paperwork is digital. I was happy with their operation, it takes a little while after clearing for CLEO notification, was a little under a month from clearing ATF until suppressors were delivered to my house.
My one and only experience with a local shop was terrible. They messed up my trust and other submittals and it was nearly 2 years after i bought the can til i had it cleared. Now days it sounds like a lot of shops have their poop in a group with efiling and that has to be the preferred option if you have a good one near and they have the can you want.