ALL of the most recent releases are great. The Nomad series is fantastic, especially "Renmin Park" and "Demons". "Sing in My Meadows" is a little harder edge and I haven't warmed to it as much as the first 2 volumes, but like it none the less. "The Wilderness" is in pre-release - available later in March I think, but you can hear clips on their facebook page. The Nomad Series is a little more psychedelic/experimental than their earlier music. I find it invigorating but I don't know all CJ fans will. I also have "At the End of Paths Taken" (2007) and like it a lot. "One Soul Now" (2004) is also great (one of my favorites), and Trinity Revisited (including Concert DVD is great and a must have - even if (especially if like) have Trinity Sessions.
You may as well just buy everything they've done. I have (save a few of their more obscure compilations).
PS - find a copy of "'neath your Covers". It was a freebee that came with one of the concert DVD's I bought but can be purchased I think. It contains fantastic covers of Springsteen's "Thunder Road", Jesse Colin Young's "Darkness, Darkness", and Neil Young's "Helpless" along with 2 other great songs.
edit: oops - I already said this in an earlier post . . .