Hi Guys I'm considering buying in a job lot of opti white tanks - pretty small one's for you desk at home or something like that. I have created a poll above for 2 sizes that I think would be popular. Question is, which do you prefer? Based upon your results I will be guided. I would imagine the RRP would be about Â£18-20 for the smaller and a few pounds more for the larger which I think is pretty good. Is this price something that would interest you for an opti white tank?