Im in UK,Scotland .For me seems better Here maps. As truck driver i use sat nav daily . I had straight run of 4 miles (most of it on dual carrige way) and Here maps give me exactly that.But TT maps wanted to send me to 7.3 mile country road. Even if i changed settings from truck to Car and tried all options from eco route-short-fast and so on..still 7.3 mile road. And in city give me bad route also. So yeah..If you drive in scotland..i recommend Here.