Ugh. The Jeremy Brett series was badly cast, badly acted, badly scripted, and badly directed. And that's just the *good* episodes.
In my opinion. In fact, Sherlock Holmes fans seem to be split 50/50 on whether ITV did a good job of it or not. Whereas "Sherlock" is, at worst, the most recent in a loooooong line of people taking an axe to the original stories. (There are probably still people running letter-writing campaigns against Eille Norwood).