[orangekid]

The GS2 does not "destroy" either phone in raw specs, it does however, get better scores in benchmarks on stock ROMs. All 3 have comparable specs, unless you want to get into pedantic arguments about things most users don't care about.

Between the Evo3D and the Photon I'd go Evo3D all the way.

The Evo3D gives you more customizing options because you can choose to have Sense3.0 which you cannot get on the GS2 or the Photon, you can however run touchwiz and motoblur respectively on the Evo, so you do get more choice in UI.

As gTen says, you can tether with a Touch Diamond if you want, lol. Or get a Hero or Evo. Unless you want to record in 1080p or run some crazy ass games then a dual-core phone isn't really what you need.