For a do it your selfer, I recommend a good quality beam type. Nothin in the world wrong with them. You could assemble a top fuel engine with one. They work just as good as a click type and actually better than most lower end models.
These are the only ones I use. Clickers go out of calibration and get to the point where you have to throw them away, because they are so far out of spec. I don't have time or money to have them calibrated. They are harder to use especially on your back, under a car, and the numbers are away from you.