Hello again,
Ive got a plasplugs DW180, and I find it fantastic for all of my tiling needs.
You can buy these machines for a great price nowadays (under £100), and from loads of places, the forum moderators can give you links etc etc to online shops for a really great price.
When you do buy yourself a wet cutter, check the diamond wheel, for instance on the DW180 you will get a plasplugs wheel. I would change this and invest in a quality diamond wheel such as the marchrist, they are a bit pricier than others but are top notch.