These are some punchy good lipo's. I been using Ovonic's 1550mAh 100C for a long time and just discovered these. Already bought 5 because they not only give you a good and steady punch all the way down to 3.82V per cell but also about minute longer flight time.Going up that building I struggled with the 100C but the 120C had no issues with that.Now as some other people pointed out the IR values are a bit high but I noticed that after 2-3 balances they go down to about 5mΩ and I have about 4-5 flights per pack now and they kept on those levels.For long term use, I have no idea yet how they will hold up but I expect at least 30-40 flights as I got similar with the 1550mAh. I think buying these lipo's you have to expect that they is a set life time and that at one point they will start declining in their health but than again, the price is right and depending on your flying style - lipo's in general are really consumables.
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