When I first bought them I worried about the balancer cable. It is a bit stiff. I had soldered my balancer board cable (TP, also stiff) just a week before. In general I am suspicious of non-flexible wires. EXCEPT for these ones. Why? Because I fly almost every day and these balancer cables have held out just fine. They are fine being bent as I charge (at 1C, which takes ~40min/batt). This is a proven product as far as I am concerned.
Finally, I do a lot of aerobatics on my warbirds. When I do crash, its too late to lay them down easy. These batts have taken impacts better than other batts I have had (ROC, E-Flite, DBY, Turnigy). I have used some of the Gforce Elite series but these seem to do better in holding charge. Now, these are all I buy. These are probably the main reason Valuehobby is my #1 buying destination (apart from their great service).
(Posted on 6/28/2014)