Like some reviews do, they either dismiss or downplay call quality. Its not just the carrier and the network. The phone plays a part in it too.
Anytime I have 4 phones, all on the same carrier, 2 had bad reception where I worked, (a bad reception area) my next phone had better reception than the other 2, and my latest has better reception than all 3, I would think the phone plays a part too....
The phones were, in the order I brought them:
Samsung u740, Samsung Omnia 1, Droid 1, X.
So he picked the Inc and the EVO, and his personal fav was the Inc. Its a Sense UI thing. Thats all. Some software tweaking to the X and Samsung phones, and they can hold their own against other phones. (the Samsung phones might need a lil more than software tweaking...)
I personally think 4" is the sweet spot for screen size. I can see 4" becoming the new 3.5"-3.7".