For the absolute best choose a good matcher as listed above. SMC is my pick
I have been running the ib3800s from integy there cheapest matched packs 39$ in both touring car and offroad buggy. Now at the club level i have been beating and or keeping up with the 50-100$ level packs(of various brands and sponsored drivers). I have been on a tight budget for a while and could not afford my usual SMC cells so i gave them a try. I can honestly say i dont come off track wishing i had someone elses pack if i lose. I go RIP so power has not been an issue my driving has been
FYI about integy:
-matched at 20amps so dont get fooled my the 700second run time
-i have 4 packs one and on my reedy quasar pro 4 of them cycle to almost exactly what the stickers say, one of them for some reason cycles very poor but on the track runs strong(i use it for practice. So quality or consistancy is of question with the integy packs again u get what u pay for.
-if your on a budget try them out,
-if you can afford it go with the big matchers,SMC,POLEPOSITION,POWERPUSH.(priced properly)