I'll add some photos of my system in the next week or two for all to see...
The only two pieces that now remain at the nucleus my system are the McCormack amp and Magnepan speakers.
The recent additions of the ARC preamp and DAC have been wonderful. I now have a remote controlled preamp with a HT pass-thru. This was important to me as I really want to use this one system for HT duty as well without giving up the sonic benefits afforded to me by the equipment already in it. To help make that a reality, I have just purchased a Marantz SR-5001 on clearance that will soon be injected for HT only duties. It should integrate well with the Philips 42" plasma I purchased about a year ago.
The next upgrade will probably be to the amp as I would like to take advantage of the ARC LS-16's balanced outputs (and I'd like to have more power for the MG-12's as well). I'd like to eventually use two mono amps to power the Magnepans, so maybe I'll look for a used ARC or Classe amp that both cover these options, then add a second if I am happy with the sound.
As for now, I will focus my time on hunting down used copies of early issue CD's that are still missing from my collection so that I can rip and convert them to FLAC for use on my music server (Intel P4 running Windows XP, Audiophile 24/96 sound card and AlbumPlayer music management system).