Apples and oranges. They had somewhat different formats.
The Vault delivered exactly what Sirius said it would, and with VERY FEW repeats.
Different strokes for different folks. I thoroughly enjoyed the Vault.
I agree. I like the depth from mostly known artists that The Vault played while mixing in some more familiar tunes. With Deep Tracks, I don't even know a fair amount of the artists they play (Vinegar Joe, anyone??

). Just too obscure on a regular basis for me.
It seems that those who swear by DT prefer anything by anyone as long as they never heard it, or better yet, never heard OF it. Why does obscurity make something better or oblige one to listen. I tune in and give stuff a try, but if I don't care for it, I'm gone.
To each his own, but one more channel relegated down the list of presets for me due to the XM-ing of the classic rock lineup. Rewind is all but gone for me and Real Jazz is on the cusp. They're even in the process of destroying their own highly regarded channel, The Loft (see discussion on XMfan in the rock section). Even the Xm zealots are not happy with this one.