Digital Distribution...Tunecore vs Reverbnation

Ive just been toodling [???] round on my facebook having lots of fun [sic] with their myband application and Ive been looking at whether to go with tunecore or cdbaby [whom Ive used for the last 3 years] and now I see reverbnation are in the digital picture.
Its such a myriad of options for the digital age and I just commented on Chris Gilbeys blog last night as to the loss of copyright and/or royalties and the total remaking of the buying audience/public. The Lime Spiders have been ticking over sales with the digital side of their last Figtree release "LIve at the Esplanade" FT102 BUT the physical sales have collapsed....ditto for FTR and Blue Valentine.
2 new releases are slated for September 2010 from Richard Lawson and once again the playing field has shifted.