Not familiar enough with them to know one from the other based on features. The car is an hour from here and I can't look at it to see features. I want to have an idea of the book value when I go because I may want to make an offer on it but they vary a good bit. Far as I can find out, they're all the same and they all have 1.5 SOHC engines, but the HP ranges from 70 in a CX, to 92 in a VX, to 102 in a DX. How can you tell the engines apart by looking at them?