where did you pull your numbers from
i don't wish to quip back and forth on IMR vs li-po but they both have their places IMR has more uses than just nerf if you vape or have a high end flash lights just as lipo have uses in R/C vehicle and nerf. Yes li-po are the best choice but i prefer IMR.
Where did I pull my numbers from?? Your link shows exactly what I quoted for the efest purple. Two efest purple wired in series would be 7.4v @ 3500mah 32 / 64 and two wired in parallel would be 3.7v @ 7000mah. Thats according to your link.
Specs for the zippy compact 2S 60C 2200mah are shown here
2200mah is 2.2a, 2.2a x 60C (continuous)= 132a.
2.2a x 70c (burst)= 154a
Specs for the zippy compact 3S 40C 2200mah are shown here
2200mah is 2.2a, 2.2a x 40C (continuous)= 88a.
2.2a x 50C (burst)= 110a
My point was only that it seems a bit ridiculous to pay more (or the same) for less... but hey, to each their own I guess.