I've messed with reaper a bit, but I guess I am gonna have to suck it up and learn a new format. Even though Cubase pisses me off sometimes, it is pretty intuitive for most things. The group routing, and not being able to change the order of insert effects sucks.
"External plugins" are the shit though!
One question - can you rename the inputs channels? I have a RME card so it's like a1 -1, a1-2. etc. In cubase I renamed them to my pre names - like api-1, api-2, etc so I can quickly set up recording tracks with out having to remember what rme channel goes to which preamp.