Hi Dan,
wow- great niche!
Your site looks pretty good at first glance. I'd recommend shortening the written content on the homepage though - either break it up into more than one 'blog' entry, add some bullet points or something, etc. - it just seems like a lot of text that most people would skip over when landing on your site. Perhaps you could have a short, punchy intro paragraph that explains your site, and then link to the more in-depth stuff?
I also might re-name the 'Products' section to somthing less salesy, like 'Individual product reviews' or maybe add a section on which keyboards you recommend.
Great start though, and I think you've got a really neat topic!