I have driven a bunch (and pulled a ton in and out garages) and here is my thoughts...
Driving them stinks because I am so scared of what could happen that I never relax. However I did take a 550 through South Beach and that as surreal.
Pulling them in and out of garages is TERRIBLE with out a spotter. I will seriously get out and look 5 times to make sure I am not going to hit anything or run over anything. Even on the 430 spiders, I feel like I need to stand on the seat to see anything. And if it is a 355 or 360 with the F1 tranny, they keep shifting to neutral if you wait too long which makes it a PITA.
And honestly detailing them is just like detailing any other car, as it is all paint from 2 inch's away. You don't get to enjoy it until your done, and usually you are too tired to enjoy it.
I did get to go for a full blast ride in a 430 Scuderia two days ago, and it was amazing!!!