Juan,
Actually the Garmin GPS12 is really competitively priced at around $149.95 . This model is a good beginner GPS and is real helpfull when hunting, Fishing, Wheeling or whatever. If you have the money to spend, I would recommend the Garmin GPS12XL. This model sells for around $190 or so and has provisions for external antenna mounting where the GPS12 does not. In a Blazer whith the top on, it sometimes gets a bad reading because of the top. Cloud cover does not affect them. Another bonus, they just removed Selective Availability and that makes them even more accurate. Get one!
<font color=red>Mudzer</font color=red>
1978/91 K5 Blazer