I don't really have a favourite era, just favourite bands, though perhaps if I look at dates I would find a large collection of stuff that I like from certain years. I guess the late 60s when Hendrix was rocking on was great, and Dylan was being Dylan. I guess also the mid 60s when the Beatles were getting on, and Dylan went electric. The late 80s to early 90s when U2 really got into it, and have continued being great ever since. Late 70s Pink Floyd.