Cambelt kit 1.9 pd

I'm getting lots of work done on the car so figured a Cambelt was due aswell for peace of mind sake. Can anyone tell me what brand to go for. I want the full kit including waterpump. Also a friend said some water pumps had plastic impellers and to check as there were uprated metal ones available for most cars. Just wanted to check if this was the case for the octavia? Cheers guys