I thought I was finally playing pretty well in tune (10 mo.) until I got one of these:
KORG TM40 chromatic tuner.
I've tried checking this before, but the guitar tuner I have does not sweep smoothly at all, has technology to "click in" to certain notes (open guitar strings) and is basically worthless to check your intonation with a wind instrument. My teacher has one of these KORG tuners and told me to get one.
No, I'm not very well in tune yet, but I think this is a great machine to help to do just that. The needle sweeps fluidly in real time with whatever fluctuations in pitch you are giving it, so you can see, visually, if you're landing on your notes or not. Long tones can be finely "tuned" in, with some concentration, to make the needle stop moving ..... and it's finally easy to find the keys of songs on the stereo. The non-Korg guitar tuner sometimes just does nothing ..... whereas the Korg follows the music very closely (or tries to).
Great tool! Just wanted to share.