Which do you feel more comfortable using? IN? or CM?

Inches, LOL i dont know of anyone who uses CM much.

I prefer inches . . . I'm more familiar with it.

inches

inches

I can use both well, but inches. I think inches are a more reasonable thing to measure things with, although cm are easier to convert. :)
I can do alot with the metric system though. I have a good grip on kilometers, Celsius, things like that. I'm ok with centimeters, I wouldn't mind switching to metric system in the US, except for liquids and measuring. If I had to measure out like, a deciliter instead of a pint, or whatever, I would go crazy. Also, when you cook, you use milligrams (you know on Naked Chef, he always says like 10 milligrams of whatnot..)

Centimeters. I basically grew up using it because most of my family is from the parts of the world that use metric

Inches for me! I don't like metric, probably because I'm not used to it. I'm happy with inches etc. :D

Inches

inches.