How much should go back into discharged lipos?

[simplechamp]

I am running 5000mah 30C Flightmax hardcases in my truggy. I go out and run the packs down to the LVC (3.2V/cell). Then when I put them on the charger they are taking 5000mah back in to reach 4.2V/cell. This seems like too much to me, should I be concerned? Or does this just mean the packs are performing to full rated capacity? They never run hot, have never been over-discharged, and are balanced every cycle. Thanks in advance for any input!