So I'm trying to decide on a panel upgrade for my comanche. At the moment I have a early 90's ifr narco stack though im not ifr rated but might be in the future. Thoughts started ifr radio transponder audio panel stack upgrade with garmin 275 or av30c to eliminate the vacuum system. Then that morphed into dual dynon skyview hdx with gps navcom engine monitor. Im leaning dynon just because it replaces everything where option 1 replaces alot but kinda goes half way. Anyone have some thoughts on where I should spend my money.