Last year our 2007 Odyssey was totalled and we received a rental GC. We had it for a few weeks and it was a good mv. It was quieter than the Ody, although it was noticeably smaller inside (and out). With a family to haul around, interior space and comfort was definitely at a premium. We thought about it during our extended stay with the GC, but it just wasn't going to work for our family; the size just wasn't quite enough.
Big plus to the powertrain, though. You've mentioned it quite a bit, but it's eager and I got it to chirp the tires without really trying. I felt like the Ody was a bit better of a cruiser on the highway, ride wise even if it was a little louder. Very smooth. Other complaints about the GC were that the transmission would hang sometimes, often when coming out of a turn or when getting on/off the accelerator. I'm not sure if that was a sign of a bad transmission (the car had about 12k) or what, but it was a little unnerving when the car just wouldn't go when the pedal was down.
Our Odyssey was decent reliability wise; the power steering went out twice, once replaced by Honda (via reimbursement) and the second by our family mechanic. We babied the heck out of the transmission wrt to maintenance. Always had the oil changed with synthetic, good intervals, kept up with other maintenance...went through a lot of brakes and tires for some reason. We had a lot of miles when it was totalled (just had the wheel bearings and all four tires replaced as well) and insurance paid us out nicely. We were planning on keeping it to 300k+ as it was well "lived in" by our family, and I literally mailed out our final payment before we left on our ill-fated trip when it was totalled. Was pretty tight the whole time we owned it though there were a few qc issues that the dealer never rectified (parts fitting). We racked up a lot of miles on it, and if you didn't look at the odometer, you couldn't guess how many miles it had.
If we had fewer kids or the GC was just a wee bit larger, we might've purchased one. Great value in a mv, with a surprising powertrain.