I've got a 671 and I either use a LowePro Nova 5 or a Marantz "reporter style" bag. If you're just carrying the recorder and microphones... the Marantz bag works perfectly. If you're also carrying a preamp and outboard batteries, I'd suggest a bigger bag like the Nova 5.... or various Portabrace or Petrol bags. Since somebody has already posted pics of the the Portabrace bags, here's a few pics of the Petrol bags (which I've heard a few people like better than the Portabrace bags), and the simple Marantz bag.