I'm told the First Watt amps and headphones work together, the caveat being IT HAS TO BE A BALANCED CONNECTION or poof ;)
I would take the LCD-2 for the Soloist.
Ideally I want all the check marks BUT it's been my experience that too dynamic turns to shouty, too transparent turns to top tilted. Resolution is free, too much doesn't exist.
The LCD-3 is less punchy and has less treble presence than the LCD-2. Smoother treble, but less of it. Listening to the Soloist on something with no punch and low treble presence ends in a high resolution lifeless experience. The LCD-2 injects some heat and drive into the equation. Mind you the Rev1 and the LCD-3 are fairly close in tonally balance.
My Q cables for the F3 should be here Wednesday so I'll either be in the market for a pre-amp Thursday or selling the F3 ;)