Hey, Sasha, I'd love to hear a rip through from your Grado/Nova Phonomena/RME rig! I bet it sounds great.
As for recording levels, a mastering engineer whose opinion I trust told me recently that if you're recording at 24 bit, there's no need to go anywhere near 0dB. In fact, he suggested that with mid-range units like RME (in his world RME count as mid-range!) if you push the levels too high you start to approach the analogue stage's limits rather than the digital converter's limits and in his experience you get better results peaking around -6dB while recording and then normalising once you've finished any in-the-box tweaking.
How about some rips, then?