I've just had my delivery of 300 400mm x 250mm tiles for my bathroom/toilet project. Thankfully they're as nice as they looked on the website and having laid a box full out on the floor, I was relieved that the overall quality seems very good so far (consistent shading, regular tile size etc). They all come from the same batch too which is a relief lol.
Right now I'm glad I went for much larger tiles than the 200mm x 150mm ones they're replacing because it'll mean a lot less grouting to have to apply and maintain. IT's amazing to think that the 300 new tiles will cover the same area as 1000 of the old ones.