I personally like this one: http://readysolution.info/marketquotient/index.html

I do design evaluations for my team and i really don't see what is wrong with your original website. If 25% of sale come from the site that is a very very good % to have. The remainder should be focused on sales support and landing pages to increase that turnover on the website.

Instead of changing the look of your website you could have gone (and still should do) with landing pages created specifically for certain demographics, promoted to them and doing a/b testing. Each landing page would ultimately become another selling tool.

Going back to your other pages, be careful of going with that is trending in design. Almost everyone new to websites is creating websites that have 'infinite scroll' layouts with circles for data, etc. Your original website looks professional, full of info which is good for your industry, and clean. The others are beginning to look trendy, run of the mill 'theme' website with too much going on that distracts away from the content data which should be your top priority.

What I would have done is simply enhance some of the categories and sections you have in your original website to drive eyes to certain areas, increased clicks and lowered your bounce rate.
But if I had to reluctantly pick one I would go with: http://readysolution.info/marketquotient/index.html