Just a quick note:

If you wind up not liking the LX NANO (which I haven't had a chance to
play with yet), I've been VERY happy with my EW Micro Recorder units
over the last 2 years. They've performed nearly flawlessly at several
contests and a big state-records flight this summer. Super-simple
operation, with an SD card slot and a single on/off button. You can
use the SD Card or a USB cable to plug into the unit and change
settings or download flight logs. Runs off of internal batteries or
can be powered externally. Easily removable from a glider, I mount
mine with velcro. Slightly larger than a deck of cards, and
lightweight to boot. Can drive a PDA (GPS NMEA output) and can accept
flight declarations from most of the PDA/flight computer programs out
there.

Good luck!

--Noel