I purchased the Pro version for it's basic logging capabilities. I simply wanted something to record the length of my flights in rental gliders for billing purposes. Also, rental gliders have all sorts of different varios (often no audio) and I wanted a familiar 'voice' from glider to glider.

The altitude logging is a bit lacking (confusing to say the least), but since I don't care about that, well I don't care.

I will say that it works well as a vario and while I had a few difficulties with the original unit (battery related), the customer support was exceptional.

Overall super happy, but your results may vary. Ramy has not happy with the version he purchased.

JB