"Tim, should I have bought this one since we are running pixhawk APM2.5 APM2.6.

http://m.banggood.com/NEO-M8N-GPS-Module-for-PX4-PIX-APM2_52_6-Buil..."

"Thanks Tim....just ordered it."

"What's the reasoning behind your recommendation"

"Interesting...is this what you are thinking...
http://www.csgshop.com/product.php?id_product=173"

"Hey James,

Thanks for your advice.  I will keep the Gartt and ztw's in mind for our next build.  We went with the T-motor 5212 and Hobbywing X rotor Pro 40A version b.  Now on to telemetry, FPV, Gimbal, Camera n props.

Rich"

"Tim,
Sorry for the late response.  Really appreciate the advice and input.  This is our first build and any suggestions are good.  So far we have bought the following:

Futaba 10JH
Pix Hawk
3DR Ublox Gps
X rotor Pro 40A version b ESC's
Tmotor 5212…"

"We are probably going to be about 4000-5000. I'm thinking we will spend 30 or under for the esc's. An RC friend of ours uses the T-motors on his smaller Tarot with castle esc's. Looked at the Cobra engines and their ESC's. I think T-motors,…"

"Tim,

Thanks for the help....any recommendations on ESC'S. I'll post some pics when we get this beast built.

Rich"

"Good to know....we were also looking at the T motor 5212/340KV. The 109.00/piece was a bit high. Not familiar withe sunnysky. Which do you recommend of the sunnysky? Any input on ESC'S? We need 40 amp."