When I upgraded to my 430W, I gained some panel space because I removed my ADF. This also allowed me to create a slot in the instrument stack which permits me to store sectionals.
I kept my King 155/gs, but do not use it as much as I use the Garmin 430W.
I kept my DME and audio panel and transponder.
I did add the GDL 69 which permits me to have the weather on my 430W. This has literally saved my butt a few times because I know whet I am headed into.
Depending upon your home base, the 430W will open up a number of airports you could not get into without the WAAS on an instrument flight.
The WAAS approach will also make your ILS easier. Using the WAAS in addition to your ILS has made my transitions much smoother.
It is an amazing Nav/com.
After I had mine installed, I contacted the instructor I use. I told him that I wanted to go fly with him for a while because the WAAS made me nervous. I told him that it was too easy.
After about four hours of flying and ground work, he asked me how thought about it now. I said that it was still too easy. He said, "You are correct. It really is easy".
In addition, you will find that holding patterns are no longer a big deal. Nor are DME arc approaches.
Tom Pelz2010-12-11 13:51:12