After reading all these responses I'm starting to feel like a crazy person. I understand that I shouldn't expect the DINC forum to praise the X, but all the negativity is so strange. All these reviews about the X's software, especially the reviewer that claimed BLUR made the phone UNUSABLE confuse the hell out of me. It's a UI.... it's like saying you can't use an OS because a certain theme comes pre-loaded. Think the widgets are useless/ugly? Don't use them. In a recent poll 75% of people admit to using LauncherPro anyway, which makes all this moot. I'll admit Sense is pretty, but it has its share of useless widgets as well.
And before anyone attacks me as some kind of X fanboy, I currently own BOTH the DINC and the X. I love them both, and I have sat them both down side bide side and moved through screens and apps, and they both "lag" in their own unique way. My X has never actually stopped or froze, and it seems to handle almost everything at least equal to the DINC, if not slightly better. Also, both the X and DINC's battery seemed bad the first few days, but got much better after a few full charges. The X has only been out a week, so for most people you'd just now be getting accurate readings, and I've been noticing slightly better battery performance lately on my X. Most people spend the first few days with a new phone trying so many new things, you can't expect the battery to be epic. And I swear live wallpapers require a steady IV drip straight from the battery.
One thing I do think the DINC is definitely better at is pictures. The X can take some really nice ones, but unless you have TONS of light, a lot of them come out blurry.
All in all, I'm keeping the X and giving the DINC to my wife. I'm one of those weird people who like a bigger phone. I travel a lot, and spend a lot of that travel time watching movies and shows, and even though the size difference is pretty minor in reality, the DINC was just too small for long periods of viewing.
Anyway, I don't want to get to a point where it seems like I'm ranting. I'd say to the OP, ignore most reviewers completely, especially ones who claim a phone is useless because of a minor (and ignorable with LauncherPro) tweak to an OS you already know and love. The X is a great phone, and 2.2 will make it, and all other phones that get it better. To me it was always about size, not just getting the newest thing out there. If you like big, the X is perfect. If big is debatable or a non-issue, stick with the DINC. Just know that either way you go, there is going to be support and a lot of passionate users to talk to.