Orchard is a full CMS not just a blog engine, but as a blog engine the 1.1 release is growing on me. It has come a long way since the betas, and proably has even further to go. But I can see it growing up to be like WordPress. I tried a few things out, and I'll be keeping it.
Orchard 1.1 looks pretty slick, but also pretty complex.
However the upgrade did not go smoothly at all - before upgrading the site I attempted to install the latest version of the BlogML module, with which to take a backup. The only effect was to totally break the site - yellow screen on any URL. So, a bit of recent data has been lost. This is painful, but I will see what I can recover.