Best item you can spend money on upgrading are the driving skills of the squishy water based thing that sits behind the steering wheel.
I posted this elsewhere ... but it answers your comment.
I've been considering doing it for a while now and have talked it over with a few people. Some people think I shouldn't do it, some people think it's a great idea and others are interested in finding out how it works out and may install it as well.
Firstly, the racelogic TC is a fully adjustable system one and can be custom programmed to a particular car or driver. It can be switched off by simply pushing a button. So at trackdays or Airfield days I have the option to use or not use.
It is better than the system in the 360. (The guy who runs Racelogic owned a 360 in the past)
My insurance company don't have a problem with it as it's a "safety device".
The system will be used mainly on the public roads. I've only lost control of the backend a couple of times in the past... but it only takes one incident to wreck a car or kill yourself or someone else.
We live in the UK where it rains all the time. I drive my 348 in all weather so using TC in adverse conditions comes in handy.
It has launch control as well... although it's unlikely I'll be using that very often.
I'll be doing further modifications to my 348 in the course of the year and trying to hit the 400bhp mark. So TC for me is a must. Besides, Boxsters and exiges have Traction control and they have less power than non modified 348's.
I'm sure there are drivers on thsi forum who can drive faster without TC. Unfortunatly, i'm not one of them. So if it can make me a little faster then it all helps.
I like doing airfield days and trackdays in the rain. Best trackday I ever did was at brands hatch indy circuit. I was the only Ferrari there amongst Elise/Exiges. It was my first time at Brands and the rain was so heavy that there was a stream of water at the bottom of paddock hill. I was lapped by all the other cars... but it was the most fun I've ever had and I was scared ****less on the day. I would have killed for TC on that day. How many of you would do a track day in the rain in your Ferrari??? How many 355's went off at silverstone recently in the rain.
Lastly... the price. Cost is only £1,000 plus fitting. Much cheaper than continuously changing my car for the next faster/better/flashier model and I can build a Ferrari that is perfect for me.
PS. The stripes going back on next year