ORIGINAL: MinnFlyer
I have a 6EX and I use it on a regular basis. Do I ever need more? On rare occasions I do, so I also have a 10CG, but I rarely use it beyond what the 6EX can do............. in a few years,
IF you need more, you can have TWO radios in case you ever need a backup (
I have about ten right now 
)
See, 9 isn't enough, 10 radios are just right!
6EX and keeping it as a back up radio is a great idea, because radios are really changing fast lately.
I'm down to a 9C and 5U, doing similarly the same thing, using the 9C was for ease of programming than utilizing all of it's features. The 9C was less than $200 buying it as the "best discontinued thing" out there, for less than half the price of the 8FG or Aurora 9. I had a 8FG and 10CA, but felt no advantage (for my hangar) to owning the 9C for so much less.