GPS Units for Christmas

My husband's parents brought me their old gps unit to see if I could get it updated for them.  It stopped working and is requiring an update but the update has to be bought. Seems to me that buying a new gps unit would be the smarter choice.  My ex brother-in-law knows cheap trucker gps (he's a truck driver) but I don't know gps units. I just use my cell phone, which my in-laws will not use except for an emergency phone they use only for an occasional phone call. Any ideas on good little gps units as a christmas gift?