I just went through the same process. Test rode quite a few new gen bikes before pulling the trigger on a mullet but it seems we look for different thingsI'm just coming to the point where I can afford my first brand new bike and am sort of stuck on what to get in regards to wheel size. My gut says 27.5 but so many people here seem to like mx and 29"ers. I had my first 29" wheel the front of a G19 after getting a cheap fox49 to replace the boxxers I destroyed. The experience I had with the mullet'd bike was a bit underwhelming. I'm not sure if it's down to riding style since I tend to try and spend as little time as possible on the ground and only really noticed the benefits on tech I couldn't jump into and/or out of. A bit more smoothness and more grip from the front but the biggest difference was the way the bike entered corners and I wasn't a fan of the feeling.
Tried a full 29" YT Capra and the only standout feature of that bike was how boring it was.
Do I stick it out and demo more full 29"ers as a 6'1" person or do I ignore the lizards and stick to 27.5? Do the people here really like their MX and 29"ers that much or are people buying because that's what the markets are selling?
Have in mind a lot of the earlier 29er frames had some weird geometry (and I mean 3 years ago not weird Niner 2010 bikes). The biggest issue was long TT but short CS which made the bike unbalanced AF. I know some mullets really do have better geo than their full on 29 brothers (Canyon Torque and Commencal Meta SX if I remember correct) but it seems to me you want a bike that will work mainly on the jumps where a bigger wheel offers very little advantage.
If you can test a few more bikes, maybe something with a bit less travel than the capra (I just got my Mullet Capra and after a few rides it really does feel close AF to a DH bike).
Edit: Just noticed you tried the torque - I don't like any Canyon enduro bikes but the Torque is longer travel than most of enduro bikes you find on the market and it's in a weird spot of being a big bike/enduro hybrid while Canyon has a different traditional enduro bike. Most 160mm mullets will be more agile.