I usually source mine from the local recyling depot. All my brews are bottled in champagne style bottles, and capped with the oversize caps.
I've found that jacobs creek bottles have labels that pull away the easiest. Omni are more of a pain. If you have the luxury of choice try to avoid the ones with the vynil like labels - can be a PITA. The label tears into small buts and doesn't readily peel off. I tried soaking the bottles for ages to soften up the glue (after removing the actual label) but the easiest way is to use a rag with a bit of turps.