Since your an Army guy I'll put it like this, it's like comparing a Blackhawk to a Chinook. The Blackhawk will fit you and the guys (or girls) but the Chinook will let you bring the whole band to the gig. Both are good at what they where designed to do, but it really depends on what your mission requirements are. If you need the additional sleeping space and don't mind the extra set-up time, then I would consider the RTT. But if sleeping space isn't a concern and you don't have room to store the RTT at the house, then the J30 is a great option. As for the Ursa Minor customer service, you'll need to stay on top of John like a Blackhat on a dirty, nasty leg at jump school. Call and email him repeatedly until you get the response that you want.