Using registered renault dealership garage for repair or not?

[tspringbett]

So my Clio 197 56 plate has just developed a rattle whenever I press the clutch pedal all the way to the floor, I'm guessing it's a faulty release bearing, and obviously I'm looking to getting it fixed but wondered whether there was any advantage of getting the work done at a Renault dealership or does it not really matter as long as it's a good garage?

also has anyone had this problem before/how much does it cost roughly?

Thanks

T