I bought the 16" score type cutter that had all the attachments for cutting straight and circular holes in tile up to 5/8" thick. I bought it about a year ago knowing that I had some tile projects coming up in the future. The price was $21.95 (regular price is $27.95).
I just got it out and with minor assembly was ready to test cut a piece of
3/8" tile. I scored it and then tried to break it as defined in the 'manual'.The cast aluminum(?) handle socket(fulcrum?) snapped in half on the first try. Other than the score the tile looked untouched. I guess the lesson learned is that you get what you pay for. Being more than a year ago I do not have the receipt(or cant find it) so I guess it is a good lesson that I will remember.