I use these in a 5" quad with XING-E 2207 motors and somewhat aggressive props. like 5x4.8.
The battery just lasts and lasts--I'm getting usually around 4 minutes of spirited freestyle flying but these give me 5 and I can come down at 3.6V/cell. Tons of pop, tons of amps ready to be drawn, and I liked the one I bought enough to go get two more. These are replacing some of the famous racing batteries and really pleased. I do think you're getting an extra 250mah for almost no extra weight. Definitely worth it.