I'm going to take a wait and see approach to this unlimited data news. Latest is you will be able to keep unlimited if you buy an unsubsidized phone: Verizon: You can have unlimited data... just no device subsidies | Mobile - CNET News
. This might be good, or they might price the tiered data plans to make them look better than unlimited.
My DX is running very smoothly on CM9 so I'm in no hurry to make a move. 4G is available where I work, but spotty at home where I would use it the most so no need for a 4G device yet, and I share the sentiment that there isn't that 1 gotta have phone on VZ right now that makes me want to retire the DX.