The Uber V is in need of some new cranks and bottom bracket, so I've been looking at what's available in the price range I can afford.
It uses a 1x9 drivetrain with a BlackSpire MonoVeloce ring, so I don't need new gears. I don't know if I can even order a Shimano XC crank without the gears or I would be seriously considering that option.
Blackspire makes cranksets, $150 for the XC and $200 for the AM, including the bottom bracket. The AM is only 83 grams heavier, and while the bike is intended for AM use I don't think I'll break any XC cranks with it.
e.thirteen also has XC cranks ("The Hive") and these are designed specifically for single-ring use. They have an interesting "polygon spindle interface" and are the lightest of the cranks I'm considering. However, the best price I've found is $225 for 180mm or $250 for 175mm, also with the bottom bracket.
I'm not sure if the longer cranks would be a pro or a con for me. I'm not planning to put clipless pedals on this bike, so the extra leverage might be nice.