Thank you! I will think about this...;-)
NGS offered me to calibrate my antenna for free so I will have both relative and absolute calibrations for it, this is actually unbelievable thing ;-), I thought they will simply ignore my letter, or quote me with $$$ numbers.
I am thinking giving all my units for free use for a year or so, if someone likes it he buys if not sends back and than I give it to someone else on the same terms. so shipping back is the only expense the person might have.
next week I week I am sending four units for calibration.
Topcon all the way for me.
Have used Leica, Trimble, and Ashtech and Topcon is best to me. They are all good, but Topcon works best for me. We use TDS (Spectra) Survey Pro but Topcon's controllers are supposedly very good now too. You also have the Carlson option.
If I were buying new today I would buy Topcon GPS and Carlson data collector.