I would stick to the matched cells if you want to chase down the leader.?
But.? If you aren't ready to take a lot of care in cycling them just get unmatched, or even better Lipos.
I personally believe the GP 3700 was the last hearty long lasting sub-c out there.
I never had trouble with them and you could dead short them.
Mine well lasted a year. They are awesome for stock.
The battle has begun. I used to charge mine at 5 amps, and worked great.
The guys running 4200's were punching them out at 7 and 8 amps.????
Why.......I think they were trying to get some punch. Thus probably why they are venting, trying to get some power out of them.
I tried them all. 3800's and vented one. My 4200's were to weak for stock and would get hot. I sold them with in a week of owning them and went to Lipos.