My LHT has a Race Face Atlas 46/36/26 crank, XT front derailleur, and an 11-32 cassette with XT long cage rear derailleur. Down-tube shifters. 26" wheels.
I also have an ultra-distance bike with the XT "treking crank" at 48/36/26 (matching XT fdr) and a 12-34 (XTR rdr). Down-tube shifters. 700c wheels.
Then, there is the Ti Aero recumbent which has a Specialite Carmina crank with 50/36/24 and a Dura Ace triple fdr and a SRAM 11-28 cassette and XTR rdr. SRAM twist shifters. This lattercrank has the lowest "Q" (width) of the bunch but that Carmina crank is unreasonably expensive (IMO). 650c (26") wheels.
After thousands of miles on each combination, I'll rate them all as excellent performers.