I ordered one from Joe's Racing. It's a dial-type, with max pressure of 30 psi. The things I love about it are 1) the dial face picks up light and glows, so you can read it in the shadows, 2) the dial is large enough to use 1 pound increments, making it easy to adjust pressures to the nearest 1/2 pound (if you want to), 3) it has a handy bleeder valve, allowing you to lower pressure to the exact psi you want.
Any gauge is most accurate when the desired pressure is in the middle of the gauge's range. I chose this model, because I also use it on lawn equipment--some of which use around 20 psi.