listen to my radio (underneath my avatar) to get an idea of what I'm listening to these days. I'm quite happy with most of what Last puts there, though there is the occasional blip. (just skip the track if you don't like it).
You won't be able to see the beta version of Last as you're not a subscriber. I think it might launch soon, I don't know. It is very different to the way the site looks now. More busy. I prefer this look (as do many others). (Just in case you're confused next time you log in and it all looks horribly different!) : )