Bobby,
I just never have any time to keep up with posting! Anyway, I never gave any thought to the bagless self propelled Windtunnels, but I am really liking this! I thought that it would lose airflow fast, but the filter actually stays relatively clean during use, and I love being able to see what I pick up with it! My parents even asked if I could leave it upstairs for them to use because they liked how well it cleaned! But you're absolutely right about being a mess to empty. It's something that I'm willing to deal with though because the performance basically makes up for it. When I got it the cord was wrapped around the handle, so I thought oh great, the cord hook is busted. But they were both actually still intact!
Dysons go for a lot on Craigslist around here too, but this is actually the second one I've gotten for free! My dad's friend gave me that DC25 a few months ago that might as well have been brand new. I just have luck with Dysons!
I did hand polish my G5. I do with all of my vacuums. I plan on getting a polishing pad for my bench grinder one of these days, but I just haven't gotten around to doing it.