I own a Oregon 450T which is getting old. Screen has a few blank pixel. I need to replace it.\nI'm also getting old so I think a bigger screen would help :-)\n\nI'm considering buying the Montana 700 and load OSM topomaps \n\n[CODE]\nfreizeitkarte-osm.de/garmin/en/\n[/CODE]\n which I already use with the Oregon 450. My main use is hiking and all kind of outdoor activity.\n\nI have a few questions:\n1) Is the Montana 700 screen as readable as the Oregon 450 under heavy sun?\n2) Will OSM based maps work correctly? (The maps I use with my Oregon and Nüvi 2789)\n3) Can it handle GPX tracks (Made with BaseCamp or downloaded from Wikiloc.com or AllTrails.com) ?\n4) Can I record GPX tracks while hiking?\n5) Is the Montana very reliable?\n\nAnother way asking for the same quastions is: "Does Montana 700 support all the feature of Oregon 450 with bigger screen, bigger memory?"\n\nAny advice is welcome.