I also have used a Boss TU-12H tuner for years (I've had my current one for about six or seven yers, traveling to all gigs with me). It's pretty much the industry standard these days for a small, portable chromatic tuner, but of course there's lots of competition. I think it's all right, although it has its drawbacks. For one, the needle is kind of "jumpy," making it hard sometimes to zero in on the pitch you want. Two, you need to be right up close to the thing to see it clearly enough; putting it on the floor to look at between tunes is not really an option (the floor version mentioned above might be preferable for this reason). Three, you can't disable the mic when you're plugged into it, so if you're on a noisy stage with other band members also trying to tune up, that needle jumps around a good deal. For these reasons I'm not sure if I'd buy it again, but I also haven't sprung for the additional expense of buying something else to replace it.