I am using a 5d2 and 7d for weddings. I would like to pickup a traditional video camera as a backup/different angle. There are many video cameras out there and I am a little lost as to where to start. My budget is around $1k usd (used is fine). The footage should be fairly easy to work with and integrate easily with the ones from the dslrs. Ability to attached an external mic will be nice. Able to attach canon lens will be nice too. Any suggestions?