I actually use one of those pretty often in brewing and found mine to be very accurate.
That being said, this is my 4th digital, and it seems like Taylor products are VERY inconsistent.
Its probably not worth it for such a cheap item, but Taylor has a pretty decent warranty, and will most likely replace it no questions asked if you are having trouble with it.
My only complaint with mine is that it takes so dang long to get a reading.
On Tap: Imperial Breakfast Stout, Mt Hood Kolsch, Fall Rye Red Ale
On Deck: House IPA