http://www.forrestrace.com/glass-panel/
What would you use to clean glass? I clean my glass panel door with glass cleaner products?
but when the sun shines on them they look smudged and don’t look clean, any ideas how to get a smudge free look?
Use a squeegee squeegy, however you spell it! Personally, I use “Mr. Clean” all purpose cleaner diluted in a bucket and a cleaning cloth to wash my windows first,(no need to rinse!) then use regular glass cleaner and a squeegee to finish. My windows are glaringly clean to a fault! Just make sure that whatever cloth you are using has not been washed with fabric softener. The softener will on the cloth will leave your windows hazy and streaked.
Good Luck! 
Odyssey Color EFIS Glass Panel (Part 1 of 2) by MGL Avionics from ROTOR F/X