I've got the Sabine stick-on. Works pretty good, but is prone to influence from outside sounds; particularly other instruments when you're on stage. Excellent tuner for normal guitar. Unfortunately, I find it's got problems with my acoustic bass guitars. Fine on the 'G' & 'D' strings, usually has to hunt a bit for the 'A' string, and only occasionally can find the low 'E' string at all (even the 12th fret harmonic). One trick 'though - if I'm using my sweet little GK amp as a monitor, I can stick the Sabine right on the side of the metal cabinet and it picks up much better.

Got a Korg tuner, don't know the model, but near the top & about $85 Canadian. Just plain excellent.

Also got a Fender tuner, about $35 with an old-fashioned VU meter display with a real needle. Why? Because none of those lovely devices that use LCD displays are worth diddley-squat if you're trying to use them at an outdoor daytime gig!

That Intelli-Touch sounds intriguing. Gonna check it out, because the idea of having a tuner to refer to at any time during a performance, and not have to have it in the signal path is very appealing.