I am very familiar with D&D earlier editions up to the latest (not 4th). Have used generic D&D adventures before without no problems. And haven't had any problems contverting monsters yet, often there are something similar in C&M or C&T that you can use with some modifications. Or sometimes I just replace or omit silly encounters that I feel is unnessecary or to hard to convert.
I do think I will try them out, have heard only good things about those adventures and when they are around 4th lvl I feel it's time to give them a nice series to play through.