Nothing worse than V6 regret. I had it for 5 years. Just got a 2013 left over GT. I AM IN HEAVEN. Fu*k the minor gas milage hit. I smile every time I drive it. My 2005 V6 made me sad every time I drove it.
Of course the 3.7 is nothing like the v6 that was in your 05. It's no 5.0 but definitely not something to regret owning.