It I may chime in here, I have been a Magellan Meridian owner for a few years. Simply stated, I do not like the way that their mapping software works. You have to divide your maps into rectangular chunks, and can group up to four chunks into one file. The problems is that the size of the chunks, and therefore the size of the files is limited. This is bad because you can only have one file loaded at one time. If you want turn-by-turn routing, this is bac because the directions cannot be calculated between areas covered by different files.
Garmin is much better in this regard. Now, they have thier "x" line out that takes removable memroy, thereby eliminating my only complaint about their units.
And as far as Garmin vs. Magellan and how fast/well it locks on to sattelites, that is a Ford vs. Chevy argument. Each has better and worse units. It all depends on old it is and how much it cost. I can show you Garmins better than Magellans, and I can show you Magellans better than Garmins.
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Darwin was wrong -- I'm still alive