I like urethane a lot, but not on truly torched conditions.  Better to stand left and throw right with a mild pearl reactive on such conditions.  Urethane is better for me on short sport patterns and on real wet dry house shots where I can play a little more direct outside the oil line.  The advantage to urethane is that it truly doesn't over read the dry as bad as resin.  The disadvantage is that it does read the carrydown worse.  That is why I don't like it from deep inside on burned out conditions.  You still can find a bit of oil in the mids when you start crossing boards at 4th arrow.