I think any phone you get is going to have it's pros and cons. I've been getting the itch to upgrade also, but I don't think I will yet. I just got a peek at the Omnia on Samsung's
site and I think it looks great, but I don't know anything about it. I have worked out the kinks in my Vogue and I'm happy with its configuration. The only reasons I'd ever upgrade to anything is due to hardware upgrade. Vogue doesn't have wifi, g-sensor, light sensor, or multi touch to name a few, but those things aren't everything. When WM7 is released, I may see what's on the market then and think about upgrading. Only then will all of those hardware features be able to be used to their full extent on the phone itself (OS support). In the mean time, you're only going to see
applications that take advantage of that hardware. It's not worth it to me yet.