I have to agree, it was stupid to release a $250 phone with no 4G. I suppose I can see the point in offering an alternative to the One V but having the alternative be an older phone that costs more for similar specs seems wrong.
While I understand Boost wanted a higher end phone, one with a dual core processor, since VM got one and Boost didn't, it makes sense they would get the S2. But then VM should have got a 4G single core phone that could compete with the Evo Design. It almost seems like Sprint is wanting people to move to Boost over VM.
As for the Nexus, it doesn't feel any larger than the Evo V 4G. Granted, the Nexus is a bit longer (135mm to 127mm) but the Evo is 50% thicker, which makes the Evo feel larger. And being so thin, it isn't really noticeable in pants pockets.
I can't say I have any regrets for switching to the Nexus. While I liked the Evo for the few weeks I had it, the Nexus is just a better phone, in every way I can think of. Though, for me, the fact that I am getting decent data speeds, especially in areas I couldn't get 4G, is the whole reason I switched.