Been thinking of running a garmin alongside the totom 2 systems will no doubt give different routing options sometimes me and tom tom are a little confused but have a feeling that garmin would be the same but maybe not both at the same time. Any suggestions on which garmin to buy do not want to spend a fortune so price is an issue as it is only a alternative to my main unit but it must map Europe. I am leaning towards 550 / 220 2nd hand or 390 ??? not really sure though.