which is the best gps for me to buy? ive done a search and its all mumbo jumbo to me

me and the wife often go away with the caravan so i end up riding alone and tend to just use waymarked routes such as trail centres for the fear of getting lost

i'd also like to use it on my roadbike

i had a garmin etrex a while ago and did'nt have a clue how to use it so i sold it

i'm not too great at downloading stuff but would get the hang of it

so basicly it would have to be easy to use and as cheap as possible