I lived with the 3.6 for 12 years. Have had the 3.7's for the last 7 months. The 3.6 was an outstanding speaker....but not in the same league as the 3.7. I heard a major improvement before the first song was half over. If you can buy 3.7's at $4000 a pair, buy all you can possibly get. Then sell them for $5000 and use the profits towards 20.7's. I will be trading my 3.7's for 20.7's very soon.
