I'm a fan of the Sachtler Dr. Bag 3 - great size, firm exterior, and the "doctor" part means the unzipped bag is taller than most bags, so you can throw stuff in, take it out, and be a lot looser during use. Fits our C300II great. http://www.sachtler.com/products/bags/video-camera/shoulder-bags/dr-bag-3/
+1 for that, I also have it for my C300mkii and I really like it.
