I had a 265 Cup for about 5 years (~45k miles) and now have a 182 FF.
Imo the Megane is a much "better car" in every possible measure, faster, more planted, ridiculously good diff, great brakes and a few light years ahead in terms of interior (unfair as I am comparing cars that age 13 years apart but still has to be said).
On track I found the Megane a lot more exciting simply because the extra speed it carries and the diff give you more adjustability. Mind you I am comparing nearly stock 265 to nearly stock 182 here, not track builds.
On the road it's very much the opposite, the Megane was a decent daily driver but a bit too serious/fast for public roads, had a scary tendency to tramline when overtaking / wide throttle on B roads and the turbocharged delivery was a bit blunt. The 182 is imo way more hilarious to drive on the road, for me personally it's more fun at way lower speeds and therefore easier to explore its chassis. I also prefer the NA power delivery.
If I was after a car to put a decent amount of miles a year in and occasionally take to a trackday then no question I'd go for the Megane - I would say it is worth twice the money. I currently have/prefer the 182 because that car only goes out for fun drives and I use it mostly on the road.