Depends what you want from your Clio really.
I've owned my Cup now for 5 months or so. Do I regret buying it over a 182, not really. I DO think I made a mistake when I'm on the motorway though! The Cup is noisy, very noisy. Ok for short commutes and B road blasts, but long motorway hauls, very tiring. I've made mine worse still by fitting the uprated mounts engine and gearbox mounts! Still, of all the RS Clios I drove, the Cup feels the better car to drive, everything is so precise, so urgent and you know exactly whats going on at all times. The suspension is brilliant, if it's not tired, very compliant over rough roads, but still hard enough to use in anger, a brilliant compromise that works well. I haven't driven a Trophy, simply because I wasn't prepared to spend £6000 plus on an old shape Clio!
The standard RS Clios are a lot better than the Cup as a daily, quieter, softer and cheaper to insure too! But the Cup feels alive, really! Every drive is an adventure, I don't regret it at all, my other car is a Volvo diesel, opposite end of the spectrum, I drive the weekend toy all the time now, mileage has crept past 41k now, but I'm no longer bothered about keeping the miles off! Oh, in it's favour, the Cup returns slightly better MPG over the standard RS, I frequently see 40+ MPG on a run, superb for the type of car.
Drive lots, try them all, only you can decide.
G