I prefered ledger nano s over trezor because its not bulky like trezor and i do not like to have a phone-like hardwallet and its very eye catchy for those snatchers, because in our country theres a lot of greedy people in the street and you might experience these criminalities,but still it depends on your preference these two hardwallets are very secured,so far ive been using it for about 2years and i do not encounter any problem.