its the Sprint network that might be the problem, not the phone..
I've had the evo4g, the evo3d, and got the sammy phone 2 months ago, and, for me, reception and signal strength has not been an issue.
Data speeds suck for everyone now, and, who knows if that will ever improve, but i'ver never dropped a call with this phone, suffer no LOS either when I was stock, or since rooting, and notice no difference at all between this phone and the evo phones; actually, call quality is MUCH better on this phone than it was on either of my evo's..
And, to the OP, there are thousands of posts over at XDA, to give you a flavor of what people think about this phone..all I can tell you, is that this phone BLOWS AWAY anything else I have ever had, and I have had cell phones since 1986! If you get one, don't root it for a week or 2, so you can see how it is as stock, Lots of people are just leaving it stock, since its awe sum that way as well..
I am in the sw suburbs of chicago, if that means anything...