So, because I'm a total nerd and love having the latest and greatest, I'm wondering what people's thoughts are regarding going from 4.7.1.61 on the Tour to 5.0.0.230. I understand there's threaded SMS and all sorts of other goodies, but I'm looking for more of a comparison, i.e. how well do they stack up? Hows the call quality, the signal reception, the battery life, etc.?