I honestly don't care whether it's on the server or not as I don't have an issue with closing doors unlike@Neo. I understand the benefits of having it, especially since it's not a roleplay server (Although it should be) and people lack the ability to turn around, waste that extra second pressing...
http://www.ebuyer.com/630166-element-gaming-mouse-iridium-820-esib-98y3-1
Cheap and cheerful, this isn't actually my mouse as I bought the one which is now £7.98 but this is a step up...I guess?