6s or 4s

[stuartg1]

I';m building a 680pro  and have 5 or 6 6s 3000mah lipos.  Fairly new to quads but it seems that most are flown on 4s as yet I haven bought esc '; s or motors so can pick according to voltage. Can anyone give me advantages/disadvantages of each set up before I potentially make a costly mistake
Thanks

[guest325]

6S is potentially more efficient if you choose the setup to go with it.
When you get into the realms of bigger higher cell count batteries cost is a big consideration so having some that could be connected in parallel to give higher capacity is a good start. There are quite a few on here using bigger rigs on 6S who will be able to advise better than me - good luck!