Lipo performance varies?

[Nick]

I hope to get a reply from someone who has used more than 2 different makes of Lipo.

Like Nimhs, you can get your dead cheap packs off eBay, rated at 3300mAh and we all know they will performe just terrible, then you can get matched packs, from companies like Orion & LRP which the performance is top notch.

Is this the same with Lipos? Or in majority are they all similar performance, voltage/runtime.

I'm thinking down the TrueRC/MaxAmps/Flight Power and other more known makes in comparision.