After much "ballyhoo" about RAW here and other forums I follow, I finally decided to put my toes in the water and switched from Large JPG only to RAW+Large JPG in my 60D.
I wasn't (and still am) not ready for the extended computer processing times with RAW files. Just to copy from my SDHC card to my hard drive (via USB 2 reader) 100 RAW pictures is perhaps 15-20 minutes. Did I mention I am still using a single-processor 3.2 ghz AMD Athlon processor on my main computer? So, it's S-L-O-W by todays standards. Importing 100 RAWS into Lightroom 3 is another 20-30 minutes, and simply bringing up the next RAW in Lightroom is 30+ seconds, each, to start processing them!
So, to speed things up, I've taken to copying the JPG folder to my HD first. That's perhaps 2-3 minutes for 100 pix. Then I open the folder and look at the small pictures, deleting the really obvious losers such as WB card shots, obviously under/over exposed, etc.
I then make a fast pass through the folder, clicking on the survivors of round 1 and bringing them up in Photoshop. I can then delete perhaps another 20% or more as out focus, slow aperature too much blurred, or even "too repetitive" of other shots (dumping the "could be be a keeper" but I have better shots of the same subject). Round 2 knocks off another 10-15% of the pictures.
Round 3 is matching the camera supplied file numbers of the 'good' JPG folder with the file numbers of the RAW CR2s on the memory card. I simply delete the CR2s that are -not- matched by a JPG of the same name. I simply have each folder open, side by side on my screen, and delete the unmatched CR2s. I've thought about simply writing down which JPGs I'm deleting in round 1 and 2, and then going from that list to delete the CR2s, but taking my hand off the keyboard (I'm left handed), picking up the pen, writing down the number (OK, I could have an open NOTEPAD on the side of the screen if I wanted) seems a lot longer to me than simply eyeballing two side-by-side lists and making sure they have the same file numbers.
Then, I FINALLY copy the "good enough to process" CR2s to my hard drive, and then import them into Lightroom. Once in Lightroom, I get yet another chance at round 2 processing, getting a better look at the pictures and deciding keep this one or keep the one next to it? Keep them both? Dump them both? etc. I may decide when I open it up, or wait until after I've developed it to decide. I may even decide to keep them both for now, but decide later on (final cut) to dump one or more.
I know my post processing procedure is lengthy, involved, and I probably deleted a couple of good CR2s by mistake. That's life. Certainly, upgrading my computer will likely cause a change in my methodology. But, at the same time, I have a backup of everything along the way...especially if I copy the CR2s to the hard drive before doing RAW/CR2 matching deletions.