Yup. For the MFLB, I don't think that there's anything better. They are specifically designed for the vape.
Do you have the old non-glyph MFLB batteries? I found that the Duracells lasted longer than those, but would generally heat up about the same. The new glyph battieres are just way more efficient in general though. They heat up trenches faster, and last longer than the Duracells. Also the Duracells aren't made for such rapid cycles, they'd start to lose capacity fairly quickly
I bought a pack of 2300 mAh batteries at Walmart. I didn't feel the difference with standard MFLB batteries, except in the price of course ($15 for 4).