Ok, fellas, lets keep calm. I really don't like involving myself in the Springfield Armory, Inc. debates.
CMP doesn't sell junk if you stick to the higher grades (Field Grade from what I've seen is even "ok" to most people; they say "fair to good" quality on their website). Then again, remember its a 50-60 yr. old rifle, so it won't look as pretty as a new Springfield but it'll have some character. They all headspace fine and are checked out by professionals prior to shipment.
But, if you'd like a brand-spankin' new M1, the Springfield is for you. Depends on what you're after. I wanted an M1, period. After examining the qualities of CMP's offerings (originality, lower price almost by half) vs. what a new Springfield offered (newness, warranty), I went for the CMP's because of the abundance of parts on the market and the simplicity of the rifle to do what work was needed on my own.
Bottom line: you won't lose either way.