I do occasionally refer to the MDC - but I also have tons of information from my own experiments with film and "soups".
I like Flickr in this aspect - if the poster bothers to tag with film/Dev/Time as it gives you a quick reference from the posted shot and how it was developed.
Developing advice on film should always be taken as "guidelines" only as the way we shoot and meter probably affect the type of negative we get more than what developer we use.
I just finished developing 55 rolls shot in Europe and as I decided to take Neopan 400 Presto 400 and the Legacy Pro 400 - I did develop them in a variety of my "standards", HC 110 in 1:60/Rodinal 1:50/Pyrocat HD/Beutler.
Scanning them shows some subtle variations in how they were rendered - the Pyrocat HD gives me abot 1/2 stop less speed, the Beutler 1/2 stop more. Both tonal range and grain is very similar in all of them!
I like my negative "denser" than most other shooters - this gives me shadow details that can be worked on. I tend to develop a bit longer than MDC recommends to get that. Holding down the agitation to 2 turns/minute helps keep the highlights in check.
Oh, by the way - Legacy Pro 400 and Presto 400 are the same films!