I should here pretty soon after the EVO comes out, so I'm excited for that. 4G wouldn't be a deal-breaker for me though but I would DEFINITELY make good use of it.
I can tether with my Iphone now, but it's just not the same. I think the EVO has refined the wifi hotspot feature much better. Since I would ponder replacing my own home internet with it. I also hate having to rely on jailbreaking. My wife's phone had the home button quit working on it. We had no choice but to exchange it for a new one. The new one is not jailbreakable. If we were depending on the Iphone for internet, we would be up chits creek.