If some very unscientific testing in the studio the other day, it would appear that the latest beta 2 of Adobe Lightroom 3 with tethered shooting support is just as fast and often times even faster than any other method, including Capture One Pro 5 and the official Canon software. Looks to be a very promising release when it comes out and I know several people that will likely switch to only use Lightroom as soon as it is feasible. Especially since it also appears to more stable and less buggy then certain other apps (ahem, C1P). Tests done on a current PC laptop and a Mac Pro with 12 gigs of RAM and two Canon 5d Mark II cameras. Have you tried it and would you concur? What other things would make you switch? Overlays? Color rendering tweaks?