With the two you currently have, you've pretty well covered the, "hard core race car" segment.
The 430 will be a refreshing change.
As for spider, if you're not truly a convertible guy, think twice.
There's a lot more to go wrong, and wear on a top is tangible after a couple years no matter how diligent one is.
Would the weather allow you to use it often enough. I'm in Florida, so I figured geographically speaking it was a safe bet.
The 430 is refined enough to drive anywhere, for good periods of time while still feeling like a lot of car.
Maybe not an F50 or 40, but still a great deal of car. And the refinements make it very very enjoyable.
Hope my two helps.
Non Tutti Gli Erranti Sono Perduti