I wouldn’t bother with BOS, as someone who has a set. The clearance is laughably crap on the 650b fork. You can’t run a decent mud tyre as there is ~3mm of clearance.
The warranty situation with them is a joke too, if it’s something like a crown replacement (due to the above creaking) which has to come from France there are people waiting 8-10 weeks.
Pike with an avalanche cartridge would be a good shout, if you had a Pike that didn’t have a creaking crown.
I don’t think you can really go wrong with a 36, other than the price. The new fork is pretty awesome. Servicing is more in line with everything else now too.