A lot of hate for X65's in here!
I know the Cup in question very well as I've done its belts, driveshafts and servicing over the recent years and it really has been both well driven and well cared for (The guy has bi-annual oil changes without any reminder ffs). Personally, and bare in mind that I see a lot of these cars each week, I find the X65 just as reliable as the X85 except the X65 is cheaper for the silly things that the cars "consume" so for example, Brakes, steering and geometry parts, bushes but the gearboxes and clutch mechanisms aren't anywhere near as fragile.
For me personally, it has to be a Cup... And I own one! The Trophy is nice but they are (again, IMHO) too hard for daily use and have delusions of grandeur. I know owners that bring them in for service and then put them straight back in an oxygen bubble like its a 60's super car. They're a Clio at the end of the day still.
As for the 172 Cup not being "worth it". The SPL was a limited run vehicle and we will never, ever see a car of its specification built again. When you look at the actual numbers, they made more Clio Williams than they did 172 Cups and whilst I'm not saying the Cup is going to hold its value better than a Williams, it is deffo a future collectable so don't write it off just yet as the prices on them are going up.
Last point is like to make - a 172 Cup as a daily in the UK is absolutely fine. ABS won't save you from having an accident in any car and as a safety system, all it will do is enable you to be able to steer whilst you apply the brake at maximum effort. If you drive any car hard enough in stupid conditions you will eventually have an accident.