Thank you for the replies, guys!
Yes, the ESC and motor don't care if the connected pack is 10S, as long as it consists of two packs with close IRs and same discharge "C" rate.
I'm wondering about the quote from another forum whether it's better to charge as 2x5S in parallel or as 1x10S in series, provided the charger accepts both configurations equally well. What I'm looking for is relatively low price per pack and longetivity with nice performance. Thus I do think Rhinos are better than FlightMax/regular Turnigy. Also, it seems the Nano-techs aren't as long-lasting as the Rhinos yet, but I'd like to get some more experience on this.
Something tells me the better combination is 4S+6S 25C 4900 mAh Rhinos, hard-wired together (as of yet I don't own any models that use 4S or 6S packs with such capacity), breaked-in and then balance-charged as 1x10S pack. What is your experience with charging as a 10S pack versus reconnecting each time to 2x5S in parallel? I will ask in the other topic of the 3010B however on this one.
Hopefully this thread will be of use to someone like me
Thanks!
Nickolay