Ollie
Member
The TuRBo ones are useful (U perms, R U R' U' M' U R U' r'+mirrors+inverses; M' U M U2 M' U M+mirror). COLL isn't useful as it affects edge permutation. Other than those ELLs and PLL, I don't think there are many other useful alg sets to learn. Someone please correct me if I'm wrong (I'm not that good at BLD, and other people probably know more than me), but I think that's right.
Nope, you're right
22LL was designed to be used in speed solving, but I don't know of anyone who uses it (effectively.) Some ZBLL cases can be used as well.