I have two G3's and the BMA auto pilot in my RV8 with over 50 hrs on them now.
Overall, I would do it again. Both of my units worked right out of the box. I did have some problems with the AP set up, but BMA got that fixed right away. I still have a couple of minor items that need to be tweaked, but generally, BMA has been pretty good about helping work out issues.
I would echo the statements about delivery, though. If you need it right away, unless they are shipping quantity, you may not get it when you need it.
Having said that, I still like the BMA units better than the others in the same price range. I really like the GPS and moving map capabilities in the G3, not to mention the EHSI feature. Others have stated that they don't care for the moving map, on the G3, but I think it is really good, although you do have to flip between the EHSI and MM in order to get all the navigation data, such as track, ETA, etc.
I have lots of other things about calibration and updating that I could share but it would be quite lengthy, so feel free to email me if you would like to talk about it.
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