I stumbled across this GPS for $99(brand new) when stopping by to look at the 330X that was on sale for $129...now i don't need a GPS right now but if either of these units is something people would recommend then maybe I should pick one or the other up. I would rather have one of the new Garmin colormap series ones but can't justify the cost right now...will either of these be something I can use on/offroad reliably and possibly upgrade in the future?