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I recently have been through two webinars that talked about converting ppc's.
- One of the things mentioned was a cluttered landing page doesn't convert very well.
- Test your landing page in the following areas: content, copy and call to action.
- The number one mistake that was mention is sending your ppc to your home page. You should have a separate landing page for your ppcs.
- They stated that you will get better conversion on organic searches vs. ppc ads.
- Use landing pages with SEO for organic searches.
I think overall you have nice looking design, but just too much. To many things to distract a consumer before getting to the "Get Started". If you decide to create a landing page for your ppcs, then I would go with the top half of the design and leave the bottom off.
I would include your phones in the product list at the top.

Syneace is right. Using home page as a landing page is usually a conversion killer.