Hi Mark,
Always good to hear other people's HD editing experiences. Although Id' love to say we had a similar experience in Premiere Pro, the downconverting to SD without jaggies or other artefacts was a bit of an epic. Now we have a decent workflow we are quite happy with it. Editing was no different until the project got too large. Our first HD project had close to 8 hours of footage

. We did use native HDV editing which I guess puts more strain on the system, but only takes up the same amount of storage as SD. I guess we're in still in the stage of trade-offs.

I definitely felt like I used a timemachine when I pressed 'render' before going to bed

How are the render times from the Edius HQ codec?
Niels