Dexis: Too expensive.

EVA with ProImage SW: The quality was not too good. I think it has CMOS based sensor
Gendix with Vixwin Platinum SW: Mid range with acceptable quality
So we are leaning towards Gendix. Does anyone here have any recommendations for Sensors and Software.
If we could only afford one sensor, should it be Gendix Size #1 ?
Please advise.
Thanks in advance for your replies.