If you have a pop, you're power on/off sequence is wrong...One thing I like a lot about the III compared to the IIXL, is when it gets turned off or on, the pop is very quiet now. Of course, everything else is awesome. Another aspect is using the front panel, which is really easy, I'm approaching things in a different way that the with the IIXL. There are a couple of things I found that I'm pretty sure are in the IIXL, but going in from a different direction caused me to try them.
48k sounds great, and I understand why its more-or-less the optimal sample rate for the application. I ask because of the need to use the optical outputs while tracking, and I have a lot of sessions that come in at other sample rates, thus needing to sample convert sessions.who the hell can listen to guitar on that sample rate?.... pfft