I also am cheap but borrowed a motion-pro mercury tube style from a fellow rider on my "other" forum. It worked great. Probably the same one red has. Just hang it from the handlebar and go to it. Very easy to read too.
My basic point is the fancy ones are nice but if you're not a professional mechanic I doubt they are worth the money. After all you'll sync you're carbs at the most, anually and even then that's being pretty anal.