Not going to upgrade my site to D7. I did too much work on the SEO which will not be transferable to D7. I do not fancy reworking it all. I would much prefer to start a fresh on a different webiste using D7 and leave my current D6 site to grow undisturbed. That said I am just waiting for D7 to become more stable before I put any amount of time into D7 website development.