Thank you all for your inputs, it is really appreciated.
I would really like to retain the Aspen so I've narrowed it down to 2 candidates: the Aerocruze 100 and the S-Tec 55X.
The S-Tec is compatible with the Aspen and on their website they have an STC listed for the M20F. Their form factor is really not compatible with my panel unless I do major rearrangements.
The Aerocruze, along with a rectangular format, also has round form factors (2 1/4", 3 1/8") which would fit nicely in my panel. When I look up their approved aircraft list, they list many Mooney models in alphabetical order up to the M20E and then they jump to the M20G. Strange since the E and the F are very similar with the F being the long body. How strict are these approval lists, can you install one an "E" kit on an "F"?
Did I miss any options?
Any comments or feedback would be greatly appreciated.
Thanks