I pre-ordered with Best Buy yesterday since I signed up with their $50 GC/Savings for upgrading a few months ago, so It's knocking $50 bucks off the price. I've never pre-ordered a phone before, but it was right at my upgrade date and I've been using a second hand Kyocera Echo since I dropped my HTC Hero in the toilet months ago.
The upgrades over the One X ended up being the clincher. I'm not crazy about not being able to remove the battery, but no memory card slot would have been the deal breaker.
Also, thanks for the update on the LTE coverage coming to Orlando in round two, complete with the map. That made a big difference as well. I live between Orlando and Daytona (both have Wi-Max) and do not get current Sprint 4G coverage, but it looks like I will be included in the LTE coverage, so that's a huge plus.