I've used a few tuners in the past, ranging from cheap sub £10 ones, to rack mounted kit.

I was looking at a korg DT10, but saw this for a few quid more.

It's small, but with a large display - its about the same length as a standard FX pedal, but a bit slimmer. The LEDs are nice and bright, and also have varying levels of brightness to give an even clearer level of accuracy when tuning up.

Of the 4 tuning modes, the first 2 are the most useful, strobing mode being my preferred method, the second 2 modes are really just different ways of showing the first two modes.

The ability to daisy-chain power is useful if you run a few pedals (and if you are building a pedal board) but you don't get the leads to do this with the pedal; you can buy them from places like Maplins though for a few quid.

Build quality is the usual Korg metal box, designed to be stamped on, so I expect this to stand up to regular gigging for some time to come.