CE gives you the individual links for each plan when you go to edit your packages & types; so you can place a small over button under each plan to go to each package directly. I like the overall design, but I too am not a fan of the 3 columns. I think it squishes the actual page content in the middle too much and distracts the user from the meat of the page.
Some small ideas:
1. Add links to Cpanel and WHM demos on your reseller page so customers know what to expect.
2. When you list the plan details, give the table cells some spacing and padding and alternate the row colors so it doesn't look like a blob of text.
3. A little more about your plans at the bottom of the page. I'm a KISS kind of person, but the customer would like to know a little more about the plans, what servers you use, stuff like that.
4. FAQ - this is a must (maybe you had it somewhere and i missed it? i'm not sure) Even though you think customers won't read it, many will. Add some basic information that does't fit on other pages. Things like version numbers for software, server specs, who to contact for what, payment options, etc.