Tandemgeek, you are correct, for a variety of reasons we did not buy the Rivazza.
To answer the questions you posed:
We are a team that weighs between 300 to 305lbs.
We ride 28mm Gatorskins, no idea what the pressure is (gauge broke) but we pump them up to just below the point where I can't flex them with my thumb. I'm guessing this is pretty close to 120. I did just buy a set of 32mm Gatorskins because we are going on vacation to a place where the roads can be pretty bumpy, but flat!! Most of our vacations lately are to places where the roads are flat, my wife's had two knee surgeries and flat roads don't bother her knees, but hills do a little. You may remember we had to go to 130mm cranks for her to ride pain free, she's got a 30.5 inseam, so these are pretty short.
The feature I value most in a wheel is reliability. I hate to stop in the middle of a ride to fix a flat or mess with anything else.
We don't have a drum brake on the wheels, but that wheel weight did include the freewheel. I hadn't thought about the fact that wheelsets are generally weighed without them. The hubs are Edco Competition, I never see mention of them here on the forum so I don't know anything about them. Maybe the hubs are really heavy, but not the spokes and rims? Anyway they say they are Swiss made on them. Total bike weight is around 42lbs.
I really want a new tandem, my wife wants home improvements done. She loves riding, but never rode before we got married (8 years ago) and likes our tandem just fine. Much discussion here about the merits of both, she's winning so far.
I've got about 1,000 dollars set aside towards a new tandem, looks like it will be between one to two more years before I have enough for a another new/used tandem. I'm not committed to the 160mm spacing, but I do love how stable our bike is. It also seems pretty maneuverable to me, but then again I have no experience with other tandems. I saw the Spinergy's were about 1,000 and thought "hmm, maybe I should just buy those?" but of course then I'd have to start over again towards getting to a new tandem. Decisions, decisions.
Thanks for saying we're not slow. We just always seem to come in towards the tail end of the organized rides we do. We're a 111 year old team. I'm 50 and my wife's 61, so any speed improvements will probably have to come from equipment improvements!!
Thanks again for all the input here, I've ridden singles since the late 70's, but all my tandem knowledge comes from this board.