There are several ways to compare GPS systems online it depends where you have looked. Amazon is a great site to go compare GPS systems and any other things you need to compare.
You can compare different gps systems such as tomtom and garmin on any consumer rating site. The best place is to go to the companies page and find consumer reviews.
You can go to Best Buy and talk to them about the different types of GPS systems they offer and what the differences are. You can also research them on comparison sites.
People can purchase GPS systems almost anywhere. There are various online retailers who sell GPS systems. Offline retailers that sell a GPS include Staples, Walmart, Best Buy, HH Gregg, and AutoZone.
I like to go to Amazon.com to buy electronics. They sell many, many different kinds of GPS systems. I personally would go for a Tom Tom brand as it is the best one available.
One needs to keep in mind that gps systems are constantly being updated and changed. However, one of the best resources that keeps this in mind is http://www.pcmag.com/reviews/gps-navigation
If you are looking to find information on what GPS system to purchase, your best option is to use a comparison website. Some of the more popular choices include: Which, Go Compare, Kelkoo and many more.
One would suggest that if someone is looking online to find reviews on GPS services for truckers that a good place to start would be the website RoadTrucker. This site allows one to compare truckers GPS, truck routes and so much more.
Tomtom is a revolutionary GPS system that can direct you from one place to another. These GPS systems have become extremely popular since their release, do to this search around online for a cheap used one and just update the maps. If you'd rather go new search around at different electronic stores and compare prices because this item goes on sale often.
Garmin has a website also you can go to also goto www.NexTag.com or www.squidoo.com/gps-comparison
First, if the one you have failed, then don't buy from that particular company. Go to CNET or Consumer Reports to see which is the best fit for your liking.
You can go to shopping.yahoo.com to compare mattress prices online.
If you have recently got your son in football and there will be a lot of travel you can go to read reviews for a GPS online at cnet.com.