Thinking of buying a CC 1.5DCI

[VENOM]

Ok, so I owned a 1.5 DCI 3dr on a 56 plate for 4 years and to be honest, I loved the car, part ex'd it for a Suzuki Swift Sport (terrible car), then after being desperate I part ex'd this for my current characterless car Kia Rio

So I'm now debating on the following cars...

All with around 40,000 miles on

Megane II CC. 1.5DCI 2008 around the £5000 mark,
Megane II 3DR Coupe 2008 around £4000 to £5000 mark
Megane III a 3DR Coupe 2009 around £5500 to £6000 mark

Love the look of the CC, but worry that such a complicated roof could be a downfall? With leaks, window issues etc..

Are they prone to leaking?, is the roof reliable?

Also, how well will the 1.5DCI perform over its 3DR coupe?

Any help would be most appreciated..

Cheers

Nick