I do not know the brand names but I've had Percocet tablets that are round and yellow with a wavy ~V on it, little round white RP10s, long M325s, T194s and IP204s. The first 3 that I mentioned are stronger than the last 2 and I do not understand why. Is it the different fillers?? I thought all of them only had the 10 mg oxy and hydrochloride and acetaminophen? So why do they work differently? Should I find out the brand/generic names for them all? Or the pharmaceutical company that makes them? They used to have these A333 ones that aren't made anymore and they were great.