Better trying the 80p one, but keep your eye open for the expensive branded ones which usually will be on offer at half price every month or so at your local supermarket.

Then see if that one is any better - you usually get what you pay for.

I always buy and use branded mouthwash, but only buy it when it's half price - which is like every other month - and I'm sure it does work!

Steve, after using your sensitive toothpaste, get a mouthwash for sensitive teeth and give your teeth a quick brush with the mouthwash. I know some people do this - it reaches parts toothpaste can't. That might help!