That said, I've heard Sim separates on the Treo's that I used to own and the stage still started a bit behind them. I also felt that it extended very deep, but I was using a Basis TT with a Rhea phono stage. I didn't like the Sim with anything digital in my system and I was using an Ayre QX5 that I'm now selling. It's a great DAC and matched well with the Sim.
As for the Treo vs the 2's, I haven't heard both in the same system in the same room to be able to really say.