I have one or two hours in 28As. The manual throttle is fine. You can drop the revs down a bit in the cruise to save a bit of fuel- about a gallon/hour is easy - more is possible. You can wind it up to the top of the green if you think you might need a bit of extra oomph for your next manoeuvre. It becomes totally automatic. I bet Dennis K doesn't even notice the manual throttle when he flies his display in a 28A. Correlated Enstroms have their own peculiar quirks - its not a governor. You get used to that too but for me, I prefer manual.
One of my aircraft has a vernier mixture control, EGT, CHT and fuel flow meters, calibrated injectors and runs quite happily at 9 gallons per hour. The other without all the kit runs at 12GPH!
I love watching pax who fly when I do the big pull on the lean knob.
