Hi All - just purchased a 2010 S5 convertible. its my first audi having owned a wide range of cars over the years. so far ive been very impressed as it ticks the boxes i have been looking for - 4 decent seats / useable all year round and comfortable! ive spent a fair amount of time looking through old threads to get up to speed with the car as much as possible. the 2 things i will probably look at doing with the car in the near future is
a) apple car play fit  - as i cant stream music from the phone and the cost for a decent bluetooth adapter seems to be not far off a carplay solution?
b) a performance upgrade - although the last few times driving it ive been more than happy putting it in comfort so the upgrade may not be as high priority as i thought before buying!
what are peoples views who have done an ECU upgrade - worth the money? a noticeable difference in performance?? also with regard to car play, can anyone thats done it recommend any options  
thanks a lot
Gareth 

Welcome fellow namesake, 

Sounds nice, and I bet you are looking forward to enjoying it. 
Since you’ve asked, if I were to buy a convertible, then I definitely wouldn’t be looking to improve its performance - convertibles were marketed to ‘ smell the flowers’ and not structurally built to handle increased power. 
Enjoy.

Regards,

Gareth. 

Always nice to hear from a fellow Gareth!!
when i saw the weather forecast for this week and weekend i knew i had to get a purchase done - glad i did and with a few trips planned this weekend, i'm looking forward to it. i'm not a typical marketers audience as i tend to do what i want but fair point re the structural build (although how different is the S5 to the RS5 structurally) 
i think the carplay is first on the list as not being able to play spotify when i can in my kids car and my aging BMWx5 is frustrating. 
cheers
Gareth