That's the catch. Sprint's 3G network was great until about a year ago, when throughput started to go downhill. My city has WiMAX, but the coverage is horrible because Sprint/Clearwire abandoned the buildout.
I'm on an employee-referral plan, which is why I pay only $50, so in a sense, I shouldn't complain about the service quality because I get what I pay for. But at the same time, the vast majority of Sprint subs aren't on that plan. If I were one of them, I'd have to give serious thought to coughing up the extra $30+ to get VZW's or AT&T's superior service with LTE (and HSPA+ in the case of AT&T).
My contract is up Dec. 1, but my market doesn't have LTE yet. I've got the original EVO, which I'll probably stick with until a few months after we get LTE. That way, they've got time to work the bugs out in terms of coverage holes, etc. Maybe by then Apple will come out with a wider iPhone. If I had to buy a new phone today, I'd probably go with the GS3 or Note 2 simply because I like the larger screen and the long battery life.
Thanks for everyone's input.