One for the prop nerds

Ok, quick question..........
I know there is going to be little in it, but which prop would pull more amps......
6x4 or 5.5 x 4.5 Apc?
Ta muchly...........

at some random numbers 5.5x4.5 shows about 10% more
http://www.ecalc.ch/motorcalc_e.htm
or give some more info please - motor KV, and how many cells is a must to know to say anything

Sorry Rob- 2800Kv on 3s

6x4 - 31.42A <comment Prop may stall -> static thrust may not be reached!>
5.5x4.5 27.44A <comment Prop may stall -> static thrust may not be reached!>
Prop Stall Thrust: If the Pitch is bigger than 66% of its diameter, the airflow will stall resulting in less static thrust and decreasing max. current.

here is manual for the program (link given before)
http://www.ecalc.ch/calcs/help/motorcalchelp.htm

Depending on the model I'd go for 5.5x4.5 if it's a very aerodynamic slick design (or even higher like 4.75x4.75 - 5.25x5.25)
If design has lot of drag - then I'd rather use 6x4
- just play with it

Cheers for that Rob...... And thanks for the link too- that's a handy tool!

No problem, gave me some time away from water changing in WIFE'S fish tank