I was surprised to discover this comp as well, especially considering that i'm usually pretty "up" on any new releases. This one seems to have been released almost secretly. While I do agree that releasing yet another complilation is really starting to get silly (we already have Shaved Fish, John Lennon Collection, the Lennon box and the Ultimate Collection), I'd have to say by looking at the track that this one (Working Class Hero) is probably the most SATISFYING. I would strongly encourage any newbie starting out to pick this double-CD up first.
I'm surprised they didn't put a few unreleased tracks on there to give it some more marketing value. Otherwise, I don't think this one is going to sell particularly well.