There is a ton of things to consider, some of which have been mentioned here on this thread.
- What GPS do you have already or are thinking of getting, type, manufacturer, etc.
- What do you want to use it for, cities, travel, off road, etc.
- What is available near you to keep costs down, servicing, asking questions, etc.
- What is available (maps, topos, software, cables, memory, accessories, etc.) for your choice above,
- How much are you will to spend on everything, etc.
- Ease of use, understanding, robustness, ruggedness, etc.
- raster versus vector maps
- custom versus your maps, downloadable, etc.
- The list goes on and Chris can you fill you in when you read the OJ article.
Bottom line is how much do you want to spend, how steep a learning curve do you want or can handle, how much more software do you want to buy, learn, handle while you are driving.
* Note: GPS is not meant as a replacement to paper maps, paper maps always work, just need to learn how to navigate first.
I chose a Garmin, one of or the largest manufacturer and well known, easy servicing, warranty, easy to use/learn, etc. I bought mine used on eBay, cheaper and got extra stuff with it for less $.
If you want to add maps, make sure the GPS can handle it and you can get or have a larger memory card (SD, xSD, etc.) start with one that handle at least 2GB if not 4GB.
Mine came with city navigation software for N. America. I added topo for all of W. Canada, W. USA and W. MX. All fit on my 2GB card and topo was free from
www.miscjunk.org and
www.gpsdepot.com. Listed by state and Garmin compatible and upgradeable.
I always select the city navigator software/data first and then the topo maps I want. That way I can get voice routeing turns as well as seeing the topo. If I have a way point like a camp-site on my topo, I can merely select it and touch go and it will tell me where to turn even though the topo is not voice routeing.
My only draw back in my system (due to age of my GPS) is I can not enter or get lat/long or elevation [only off topo maps]). I solve this problem by using Garmin's free but no longer upgradable nor supported software nRoute. But it works just fine for me.
I use the GPS antenna with the GPS I bought and simple connect the GPS to my Acer Aspire One and the antenna sends my location to the nRoute software. I get instant speed, elevation, lat/long, voice routing etc. I can enter lat/long, create way points, tracks, etc.
A very effective, versatile and inexpensive solution to my problem and perhaps yours as well. I get around western North America very well with this software, even in Mexico, cities, Barrancas Del Cobre, and the larger and more confusing cities in the USA like LA, Denver, Phoenix, etc.
If you need more info, help, questions, email me as per my profile.
Good luck!:costumed-smiley-007