Experience installing 60x60 tiles yourself?

If I find any "decent" 30x30 porcelain stoneware for under €20/m² somewhere, I will definitely go for it! But so far I haven't found anything, whereas for 30x60 or 60x60 there are even several tiles to choose from. As I said, I have already laid 30x60 in a half-bond pattern and in my opinion it turned out quite well. The question of all questions now is whether 30x60 in a third-bond pattern or 60x60 in a cross-bond pattern is easier to lay. All this under the premise that the screed is most likely not perfectly level.