I just started using these Speidel fermenters and they are great. http://morebeer.com/products/speidel-plastic-fermenter-30l-79-gal.html?site_id=9
They are hard plastic with handles built onto the sides. At just under 8 gallons, I have plenty of head space. The wide opening makes cleaning a lot easier than regular carboys. The spigot valve makes racking a breeze. They are a little pricey compared to regular carboys, but well worth the money in my opinion.
Wow! Those look awesome. I am going to have to look into those. Thanks for sharing.