[dbyler]

I tried it for a couple trial periods and almost bought it but could never quite get over some of its quirks. E.g., sometimes the headers would get stuck so when I switch to another message, the prior message's headers would still be displayed. Not a huge deal, but enough that I could never quite trust it (what happens if I hit reply and the display bug is happening? who am I replying to?).

While I loved a lot of the features (e.g. Quick Reply), in the end the only truly killer feature that I could't live without is the ability to archive a message with a single keystroke. I hacked together an AppleScript+Fastscripts solution for this and haven't looked back.