@rddvet, a bonus of the Stealth classic over the tec would seem to be easier packing for travel, given the tec's plastic sheet in the wing outer center surface. As you have both, if you were trying to travel with just carryon for some warm water dives, would you pack the classic or, I assume check, the tec? Would you feel like you gave up much in-water performance with the classic? For moderate gas/cylinder loads. I like my stealth tec, just curious about travel options.
This goes to tbone's point to drive to some place with several to try. Though that might be challenging to assimilate as a complete sidemount novice.