I’ve never done a blind shootout, and since I use the UR-22 mainly in hotel rooms and live situations, monitoring through headphones, I can only tell you that the AD conversion has never caused me to stop and say, “wow, that’s somehow different from the stuff that was done on the other equipment” after I’ve dumped it back into my desktop system. The preamps are transparent and clean. DA conversion has been good enough for me to mix and master projects away from home. I don’t require much for my remote work, and my only issue worth mentioning for other users is that the direct monitoring shares a pot with the main outs, which can be irritating, especially when I’m running a redundant recorder from the line outs-- have to make sure it’s set right.
I think Sound On Sound’s review from '13 (I’d post the link, but who wants to get busted?) is pretty spot-on. It’s a quick search.
I use an RME FireFace 800 when not on the road. Except for blowing a power transformer last year, after about 8 years of constant use, its performance has been spotless.
Oh, and are you related to Rastapopoulos?
Probably depends on what time of day you catch me.