GPS audio socket, 2.5 or 3.5mm??

[yamr6]

Hi, 2 Garmin Quest packages are for sale, 1 with a 2.5mm audio socket and the other a 3.5mm.I have not thought that far ahead as to what if any audio hook up I will have so which is the more common size?

[Mr NiceGuy]

3.5mm is standard but you can get a 2.5mm to 3.5mm adapter from Maplins for a couple of quid so don't worry.