While it's hard to compare phone that aren't out yet, I can say that the Droid Incredible 2 is a GREAT phone! SGSII won't be around for a while, though rumors state it will be 3G only due to the size of the LTE radios. DX2 is supposed to be here this month. No FFC but Dual Core vs FFC and Single Core for the Dinc2. The OS isn't optimized for Dual Core (YET), and I imagine the single core phones will still receive love for the next two years at least. Dinc2 is also a world phone if that matters to you. Even though I live in an area with LTE (currently able to pull from the airport and slated to be all over the area in 2011), I couldn't justify the price premium of the LTE devices with the battery-hogging properties of the LTE radios. How fast do you need your phone to be? By the time my upgrade rolls around again, I imagine LTE will be much more mature (and widespread). YMMV,
Bryan