It's time to put a new chain and cassette on our CoMotion Speedster. I've read some of the discussion regarding the gear spacing (11-34 vs 11-28 vs 12-32 ad naseum). I'm concerned about it one cassette brand seems better suited to tandems than another. The current rear derailleur is a 9-speed XTR. If you feel compelled to comment on the range... We ride in Northwest Florida 98% of the time and have yet to use the 30 tooth chainring while in the state of Florida. We rode a century in Tallahassee and stayed in the 52 tooth big ring for the entire ride. Yes I cross-chained going into the larger cogs but it was simpler than worrying with the drop to the middle ring. Total team weight inclusive of the bike exceeds 415 gear-mashing pounds.
Thanks for your input.