If your primary goal is to move away from the laptop, and you're happy with the rest of your sound, you simply need to replace the laptop with a bit-bucket. If you have the budget, go for a stock HD-P2 or 671, as Jason suggests. If you're a bit shorter on cash, the MicroTrack proved sufficiently reliable for me when I used it (though it hasn't for others).
As for swapping out the V3, I think you should evaluate the sonic characteristics you do not like with your gear, identify the sonic characteristics you would prefer to hear, determine which other gear may provide the sonic characteristics desired, and act accordingly.
If I were you, I'd hang tight until hearing the forthcoming ACM V3 / stock V3 comp to make a call about whether you prefer V3 or 722. Personally, I prefer the V3 sound to the 722, but others obviously prefer the 722. You really can't go wrong with either, it just depends what you like. If it was me, I'd do what Jason suggests (since I prefer the V3 sound).