I got many of the brands that are available in the protected 18650 market, was wondering what the difference was between those brands and if some are preferred over others. I bored my MD4/MD3 bodies so size is no longer an issue.

IME, all of these brands have held up just fine but wanted to hear other opinions. Mine are all 3500 mAh and I assume they are all Panasonic 3500 mAh.