Hi Bruce,
Glass Instruments + GPS...........Hmmm.....May as well add autopilot??
I'm in the same boat (or plane!) as you, researching various Instrumentation, GPS and Autopilot options. I comes down to money and personal preference.
Check out this web site, Dynon Avionics - Home they have great products, so I've been informed.
Let us know how you go.
All the best, Jayden