Controller (CO2 and AC) ... which controller?

[Flying Dragon]

Trying to decide between these two controller units:

C.A.P. Xtreme Greenhouse Controller
XGC-1e
R & M Supply, Inc. - C.A.P. Xtreme Greenhouse Controller

and

Sentinel CHHC-4 Cooling Heating Humidity and CO2 Controller
CO2 PPM Controllers « Global Product Solutions, LLC

...
One of them times the lights, and the other has remote sensors. Anyone have suggestions based on experience?

 

[exile19]

Google and see what other people say..