I'd much rather have electric AI and DG and vacuum TC in the traditional
set-up. I've seen numerous vacuum failures, but in over 1000 hours of
flying I've yet to see an electrical failure where I've had no power
at all. I'd rather have the most useful instruments powered by the most
reliable source.o

I experienced two complete electrical failures in my first 100 hours. Of
course, that's more a commentary on the condition of the rental fleet back
then...

I've never seen a vacuum failure, in over 800 hours of flying. (Although I
did experience a vacuum attitude indicator failure a couple of months
ago...)
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"