I've bought and tested the fullriver LiFePO4's recently and came up with some pretty inconsistent results
I wasn't able to get close to 3300mAh capacity (by a long shot) about 85% of the time.
Some ratings came up between 1000 to 2500.
I was charging at 0.25A to 0.375A and discharging 1A...
I've used these a good bit and I think 30A is safe non-continuous (used in 2s RC car); I've also done about 15-18A 30min continous and I believe they didn't get hot.
It's cool because a standard 18650 max discharge is about 5A so these handle about what the batteries can handle so its a good...