Shame you didn't like the Superb Luke, they have the potential to be a car I might of liked should I give one a try. The clutch sounds odd, I know some VWs have a problem with the clutch, I think the slave cylinder. I drove a Bora TDi highline which had a constant vibrating clutch pedal, though that was put down to the cylinder fault and not due to crappy build quality, well ... Its true though, VAG cars are not well built and should not get the good reliability record which they seem to have following them. Im pretty dissapointed with recent VAG cars.
We have a 1.9TDi Audi A4 Quattro in the family, that is like a truck to drive. As soon as you start it up everything is vibrating, you can feel the engine through the seats! The clutch also vibrates, its just a very gruff and grumbly car to use, especially around town. A world apart from my HDi C5, which feels more like a petrol after driving the Audi. Its also nbot very reliable and costs a fortune to keep going, currently needs new front wings due to rust and a new power steering pump, again! Best stick to French cars
Could it be that your too in love with Meganes to give anything else a chance? I don't mean the Superb but other cars? I know I get like this, while I do like other cars I can't think of a better all rounder for me than a C5. Though its probably more like I couldnt see myself without one now

However I know there are better cars or just cars I would like as much, if I gave them a chance. I can understand where your coming from though and if something happened to my C5 I'd probably be out looking for another.
Why would you want another Avantime? Surely one is enough and you already have the best one!
There are many many cars out there, surely something else must suit you? When im looking for another car I go through a few car mags, older and newer, and make a list of what I might like. Might help!