Ive done european work for years starting out in an F7, flat top F10 (10 turbo six moniker) F12 standard cab and F16 GlobeTrotter. Tbh, sometimes the extra height is nice with the extra storage space which goes with it but overall a standard cab is no bigger. Ive just specced my new FH16 with the standard height cab not the xl and even that will more or less clear a 4m trailer, any higher and youre into fuel penalties…