the only loach at the lfs is the black kuhli loach, and the albino corys until more fish come in, they might have gotten new stock in since saturday but who knows
Then i would wait on it and possibly request they order other loaches for you or go to a different store both the khuli loaches and cory cats will be harassed and probably killed
clown, red tailed, tiger, horse face, zebra. Any one with a thicker body really except skunk they stay smaller and khuli and weather loaches because of body type is similar to worms and they move slower.
The best tank cleaner that I've seen is the common pleco. They clean tirelessly when they are young. As they reach 9-10" they seem to be happier with wafers. Maybe they just get a bit lazy. Even a 2" has kept both my 55 gallon tanks spotless. When they get roughly 8" I give them back to pet store & trade them in for a smaller version. Algea drops are $7-8 bucks and a 2" common is $3. Sure they are messy, but so are all plecos that I've had. I've got 6 different kinds of fancy/rare plecos and the common, bang for the buck, wins the cleaning contest