I fall on the "Pillar" side of this equation personally, just because POD doesn't really "speak" to me exactly. But I have a few of their CDs, and I'll play them from time to time.
All this talk of music is making me miss my cds- I have been boxing stuff for about 6 weeks now in anticipation of a move- I should have packed my music last- argh- oh well they say hind sight is usually 20-20!
By the way if you are into Christian music do a google search on a site called Sound and Spirit- they usually have a special for joining- buy 1 cd at regular price and get 11 free- with nothing else to buy or no obligation- with shipping you usually average about to about $4.00 a disc- a great deal by any standard and a really broad selection of music.