I've got the MX11800 and while I love it, I want a new keyboard so I can really see how brand new browns feel. Can't wait for my filco tenkeyless to get here for that reason. The MX11800 is a great keyboard, though.
Buying off PCHome is easy...check out the Geekhack wiki. I actually figured it out on my own before seeing the post on the wiki, and I could have saved a lot of time looking there first. Check out the wiki, get yourself a brand new ducky for 65GBP and enjoy.
Or, get yourself a used MX11800 for some ~30GBP shipped, if you can find one in good condition. I got lucky and got one for $20USD + $10 shipping off eBay, and it worked perfectly. It was really dirty though...like REALLY dirty. I spent 2 hours cleaning it, and it looks like new now.
Honestly, if I was you and I had the option between a Ducky 1087 and an MX11800 I'd get the Ducky, for the simple fact that it's a tenkeyless, better built, and better looking (subjective, though). I may be twice the price but I think it's definitely worth it.
P.S.- I only got the MX11800 to try the browns before I made a final choice of brown vs. blue. Settled on browns, so I think you've chosen the right switch.