i used Gates belts, good reputation, competitively priced and was used by Renault.
Also need the black plastic plugs/oil seals for the camshaft end seals. You'll need these after setting the cams ( cylinder 1 TDC) in readiness for taking the belt off. I would also do the phaser pulley, you're already in there. If you do this you'll need new bolts/nuts for the cam pulley's.
I did have the full timing tools, but lent these out and still haven't got them back. only need these if you decide to change the phasor pulley.
Oh and by rights you should change the bottom pulley bolt. This is supposed to be a single cycle torque (tighten & torque once) bolt.
The bolts, camshaft end seals etc i got direct from Renault (renault parts direct - wolverhampton), but I phoned them up and got them in the post the following day.