I've got a Devilsound v2.0 and I haven't really compared it head to head with anything else in respect to the LCD-2 as I am using it in my HE-6 rig ATM. I have heard the LCD-2 with it, but it's hard to compare it with my main LCD-2 setup as the amp is so different. I love the form factor but will be swapping it out soon for a balanced DAC with more features on that rig (XDA-1) so it will become a "floater" soon, which will allow me to compare it directly to DACs in my other systems as well as the new Emotiva which should be here soon.
Another thing I love about the Devilsound is the fact that it comes with such HQ cabling, on both the digital and analog ends, this is very convenient and a money-saver. I tried the v2.1 for a while and thought it was slightly more resolving and dynamic, but this is from memory and not a direct comparison. If you don't need any additional features like switching between inputs or upsampling/high bit rate compatibility, I think that the Devilsound can hang with some really nice DACs SQ-wise but it all depends on synergy down the line.
I like the Devilsound approach, and if the XDA-1 doesn't impress me out of the box I will probably consider their Halide Bridge as an upgrade at some point if it improves with my Bravo. To try a little of that Streamlength magic, y'know.
If I was going for a real nice full-featured DAC the ones I would take a serious look at are the Wyred 4 Sound models, they reportedly sound great and have an incredible bang for the buck.