1971 vs 1972

I'm going to do a series of polls like this, each featuring two consecutive years.  The aim is to see how our opinion of music over the years rises and falls according to our personal tastes.  This being a prog forum, I expect the early 70s will be more popular than the mid-60s, for example.  But let's do this in lots of small polls, rather than putting 25 years into a 1964-1988 poll and another 25 years into a 1989-2013 poll.  That way we'd each only get to vote for two years out of fifty.  Plus of course you can't really compare  1964 with 1977 or 1988.  This way we get  to compare like with like. So which year do you think had the best music? 1971 or 1972?