It isn't as big a deal as people make it out to be. If you read any review on the 172/Cup you'll see there are always positive comments about the sensitve throttle.
And at least you'll never have to change the cable. Which is a common fault on ph1 172's.
Its a fact that the delay is noticeable. its obviously something you get used to, however when i changed to the 182 it took some getting used to the delay.
my cable became corroded on my old car at 60,000 miles and cost £20 for a new one... hardly an issue lol