I want to get a backlit tuner. I've currently got the little Korg AW-1 clip-on tuner which works really well, but it doesn't have a light. I recently purchased a cheap backlit clip-on tuner on eBay, (TuneTech TT-1000) which I can't get to work at all with the bass. It might work OK for guitars (I haven't tried it) but I need something that works with arco double bass. Ideally, I'd like a clip-on tuner because the separate clip-on contact mics always seem to break. But if there is no such thing as a good, backlit clip-on tuner then I will just try to find a more robust clip-on contact mic to use with a tuner that has a 1/4" input jack. Anytime I've borrowed someone's Boss TU-12 I've liked it a lot. It seems to work really well for bowed tuning. I'm trying to decide between the three Boss tuners, TU-12, TU-12H, and TU-15. According to the Boss web site specs, the TU-15 can sense lower frequencies than either of the TU-12 models (down to 20.60 Hz as opposed to 32.70 Hz for the TU-12 models) but I don't know if that makes it a better tuner in real life use. And I've not had any experience using the TU-15 personally. Korg seems to make a few nice backlit tuners, but I have no experience using those.