Eagletree is great stuff - I've done tons of logging with my Micro ELogger.

So far as how much is needed, the ICE will do plenty. The newest software does some data compression, so the logging time is actually longer - I think up to 75% longer (ie, if you are at idle for a long period of time while walking out to the runway, it uses less space to log that time period). Accuracy of the ICE seems to be very good. I've not used the IC HV yet, but the ICE Lite 50, 75, and 100 all work very well.

Regards,

Dave Lockhart
Team Castle Creations