Hi Ive been thinking of a complete site update for a while, do people think that top navigation for categories is better than left hand? In my experience of using other websites with top navigation I have found that they can often get in the way and be annoying when you hover over them and they keep opening when you don't want them to (unless they can be made to not open unless you click?) I was keen on the new tuscany template. Im also concerned moving my product categories to the top navigation may affect SEO negatively?

I have a lot of products, but I think our site currently is quite clear, we get good feedback from customers although its quite old looking. I also want to introduce refine/filters too. This is our site if anyone has any feedback re the navigation?