I liked that I was able to get it with all the tabs already welded to the axle from currie. Plus it looked like it freed up some room to run the exhaust above the axle. Im running ride tech shocks with with speedtech torque arm though.

Lots of good questions there.
Exhaust. I think Ours has more clearance above the Axle due to the fact that there are no upper arms to contend with, BOTH will need custom tail pipes. I know you can fit 3" in ours and if it is built correctly they will not contact the axle prior to the axle contacting the floor or frame. We always use the cut and weld method when building our tail pipes. more labour intensive but you get a much better fitting part.

Ride height. I think you will find that both will get you the ride height you are looking for. the 1 advantage of the Torque arm is you really don't need to worry about the pinion angle. because there is no change during the travel. so you can adjust the ride height and not have to readjust the pinion angle one it is initially set.

Rear end. the 10 bolt poses a bit of an issue for us as you would need to modify the 12bolt front billet mount to fit the 10 bolt. we have the rear mounting ring it is just the front probably 2 hours of work and some aluminum welding (sorry) if your budget allows I would consider a 9" we can build one any width with the brackets already installed THEN the housing is straightened including 31 spline axles ford Nodular center section, TrueTrak diff, Timken Bearings ready to bolt together (the third member is assembled)
the 9" allows more floor clearance due to the pinion location being lower and further back plus it's cheaper than a 12 bolt.

Front suspension design. Almost identical. Our Chicane coil over mount is a big advantage and lets you run a longer shock and spring if you thinking of going that way.

I also have my exhaust ran under the axle no issues at all

Thanks for the info, Blake. I appreciate the detailed info.