Snark ST-8 Titanium Tuner

I'm a Snark user since a long time, bought many ST-2, which I used to recommend as it was fast, tight and cheap with mic and piezo option. The only problem was the battery, which, once running low, make the screen hard to see. So, I was very excited with the new series that finally included an in-build battery. I bought the red one, totally inaccurate for the tuning, lack of precision, then the Titanium, supposedly precision enhanced, compared with my old ST-2 and my ears, and I can tell that this is all but accurate. It's more or less accurate, which any cheap tuner under ten bucks can do. On top, no more mic option, which was awesome to use when playing with ethnical instruments to catch the right pitch. So we had a wonderful product that just needed a built-in battery, and now we have a wonderful battery with a faulty product, I'm so disappointed... I'll have to move to another more reliable brand, if anyone have a good suggestion...