I participated in the group buy, and i am not disappointed so far.
I have just over 4K miles on them - still low mileage, but quiet and smooth so far.
(Even the wife noticed the change in ride ... so that's a major thumbs up for me)

My tire experience so far -
1. Orig Diamaris
- Noisy after 15K miles (replaced fronts due to noise at 16K)
- Rears Lasted less than 18K miles
2. @ 19K Latitude HP (got credit for low mileage on Diamaris fronts and replaced all 4)
- Noisy just after 17K miles
- Good thread on fronts, but rears are shot at the center even at 36PSI
3. @ 39K Vreds - so far so good.

For my style of driving, handled well both in dry/wet (As wet as AZ conditions get).

My expectations -
1. Noise by far is my biggest concern - it really annoys me for whatever reason. Possibly because it takes away from the way the car sounds naturally. Doesn't help that my wife's old lexus and current Acura are much quieter.
2. Mileage > 15K will make this an awesome buy. Since even if i change my tires after 15K for the same, cost would be less than the Latitudes.