I'm unsure which model is best for me. I hike, mountain bike and road bike. I need UK maps at 1:50 & 1:25 and I need Spanish maps at 1:25 and some of the specialist maps such as Piolet. I probably need one with an SD card to carry all the maps and I need to be able to mount it on a bike. I would like a high res screen, 480*640 and not too heavy. TRAIL doesn't take the SD card, while AVENTURA won't fit on the bike. Suggestions? Regards, Graham
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