Good luck AmazonMan,
One recommendation I would make is to include a video version of your buying guide, even if it's just a voice-over while watching you go through the motions of looking through some of these charts you've mentioned. This is because a good percentage of viewers will lose interest in your page rather quickly, having a video there is unlikely to distract those who want to read on and really only helps you retain those who don't. Additionally, you'll pick up some traffic from Youtube if you choose to host there (and you should).
Cheers!