Korg KDM2 Digital Metronome - (New)
This is the first metronome I have owned. Now I realize I really should have gotten one years ago. I feel like it is already helping me stay on tempo more consistently.  I can't make comparisons with other models but this one seems to be PLENTY LOUD with different choices of the type of click you desire, and with the headphone jack output, you can listen to it through earbuds or feed it into a monitor system in a band setting. Many times our band tends to speed up the tempo, even if only slightly, during a 