Usually change cars about every three years. Have had excellent
MCS since late summer. When
JCW kit finally arrives will be talking about two years use. £3/4k (25% increase on 'basic' car's price for two years extra torque/power? Nah - very relunctantly have to say it's becoming a "Hey, where's the nearest drain?" scenario. "Nuts" is how one of you guys called it. Others (including HardTimes and his acknowledged psychiatrist) will, I know, disagree.
Don't say get the Hartge - quad exhausts, warranty costs, add another grand. Like Sainsbury's and Tesco, if there were a serious imbalance in the cost of their wares, one would go down the pan! IMO, Hartge is strictly for the Birds (geddit?).
For the fearless, forget about 28% mpg loss, increased insurance, and "Not a good seller, Sir, youngsters can't get insurance." Enjoy the two second improvement in the 30 - 70mph dash. Just do it - but firstly look at the seconds on your watch and count. D'oh!