The best one I've known but never owned was a Peterson. Still trying to justify the expense. Saving for the new pedal model, I is. Wish they'd apply their smarts to an Intellitouch type model.

Current favourite is the tuner built into my Zoom multi-effects unit (GFX-1). Leagues better than the piece o'crap Digitech that preceded it.

The Intellitouch really shines on banjo, mandolin, fiddle, in my experience, but is pretty good all 'round.

Shouldn't complain much though...still remember when we all tuned by ear, to some shoddy piano or pitch fork (yeah, tuning fork), and then fought over it.

Peace, Mooh.