No worries. There is a great range of WC orientated fans available at the moment anyway. The FQ121 is great for a low cost option, with the ocuk spec fans coming soon. Again though, this is just supposed to be a great performer at a low price.
If you want the best though, take a look at the EKWB Vardar fans. They aren't much more money and they are designed for out and out performance.
Then there are the Parvum fans too which work well on rads too but look loads better.