My trusty Intellitouch PT1 suffered from a fractured hinge joint [a known weak spot] that couldn't be replaced or repaired so I started to look round for a replacement and decided to give the Snark a try. This device really does live up to its claims. Attachment is secure, tuning response is very quick and the display is clear and ergonomic in the way that it is easy to read. The Intellitouch could never reliably lock on to the notes quickly enough to track a note as you tune it - this meant that tuning was a multi step process - pluck, check, tune, pluck, check, tune etc until the arrows matched. With the Snark I get a real sense of where the tuning is - not just high or low and can see the note come into tune on the display as I turn the tuning key. For slight out of tune situations the whole process is very quick - pluck, tune, done! Highly recommended, although I expect I'll be changing batteries more often than the once every 5 years that the Intellitouch required.