difficult one mat....having only had my 180 for 2 months and having considered most of the cars on your maybe list I still went for the 180.....the megane WILL break and be worth pennies once you've had enough...leon cupra, sitting at the lights when test driving one i suddenly became aware that i had one either side of me and one coming the other way, like a rash down here kiddo! honda, naahh v expensive when they go wrong, and they do you know....rs focus, mates got one he drives like a granny and gets about 18mpg if he's going down hill and you ain't gonna get a decent one for less than 12k so its the astra but can you really believe that you'll be at the pumps any less in this??
i'd consider spending 2k on an lpg conversion, it will have paid for itself in approx 100 fill-ups and it'll only cost you 25 quid when you do!! still got the v6, still got the noise, still got the smiles....
tough choice tho kiddo