I would say to get a tile scorer, they are much faster then cheap tile saws when they work right.
But on the other hand I purchased this one a few years back
'Home Depot Tile Saw' to tile a counter at my house. It works great for 6x6 tile but I have also used it to cut 12x12 tile for my kids bathroom and it also worked great then, just a little time consuming. I am currently using it to tile my kitchen. It cuts through the terra cotta tile that I am putting down in the kitchen right now like butter.
Its $48 +tax and you could use a lowes $10 dollar of $50 coupon and get it even cheaper.