Well, the world keeps moving, just when I thought I had a NAS picked out two things changed:
1. The Synology shipped their DSM 3.2 which supports Lion so it is now OK to buy
2. The first 4TB (!!?) drives are now being released and there is a move to 1TB per platter, so it seems like waiting for 4TB is pretty important. With the 5 drive chassis like Synology, that means a raw capacity of 20TB. Wow, my Drobopro now has about 8TB with a mix of 2TB, 1TB and one 750GB drives. So when the 4TB come out, this thing could go to 8x4TB or 32TB raw capacity.
3. HD Homerun Prime. This has been shipping and it now looks like it does support MythTV which runs on the Mac as long as the copy freely is set. This means I should give this a try and probably reduce my Tivo subscriptions to just a single box. I did get a new Tivo Premiere so can use that as the main box for now. The reviews and final looks see good. Also from individual reviewers. And their forums seems to show it will work with MythTV. It also looks like Seattle Comcast has copy freely on the non-premium channels