Garmin 176c Color GPS
© Copyright 2002 - 4 Chuck Kopelson 10/30/2002
Updated 05/07/2005
Most laptops don't have serial interfaces anymore. The older garmins (before 2004) use serial interfaces. You can get cables for these from Garmin and from http://pfranc.com/ .

This is the Garmin GPS 176C. IMHO this is the best unit for my use. I had a Garmin 3+ which is a great unit. I just couldn't see the screen while driving. The 176C has a nice big screen that is clear and readable in the bright sunlight and with sunglasses on. Because of the larger screen the menu system is even better then the 3+. The unit has WAAS which Garmins fancy autorouting unit doesn't have. This GPS accepts the Garmin memory cards which will allow you to load a ton of maps. I got the 64meg module. The 176 comes with a very good mounting bracket. With the 3+ you had to buy a mount.

Skymaster external GPS antenna - $99.00 Wolff's GPS accessories http://www.gpscables.com/   This is a fully weather proof bulkhead mount (3/4" dia. hole) unit that is about 3" in dia. and 1/2" tall.

Latest GPS Units:

Garmin

I have the 2610 as well as the new 60CS.  Both have been great.  I use the 60Cs while hiking on the trails.  It is a great hand held unit and using rechargeable AA batteries helps a lot with the batteries.  The screen is glass and is quite durable.

The 2610 comes with a 128MB CF card.  I bought a 1GB card and it holds almost half of the US.  I use it to download the City Navigator 6 maps for road routing and the 128MB for Topo maps.  Just turn the unit off, switch the cards and you are in business.  The maps load very quickly but you will need the external antenna with H1.  Mine will take for ever to lock on to the satellites without the antenna.  Once I mounted the antenna on top of the light bar it is almost instantaneous.  The techie at Garmin told me that a 2GB CF card will hold (almost) all the maps.  It is easy to move the 2610 from car to car as many have pointed out.  But it is not "person portable" since it does not run on batteries.  Be sure to keep a couple of extra 1AMP fuses (for a couple of bucks from any auto parts store) as the in line fuse in cigarette lighter adapter that has the speaker built in tends to blow.

The garmin 2610 is a better unit for off-roading as it uses the memory compact flash which is shockproof. The newer unit, the 2620, has a built in harddrive which would be subjected to hard knocks and jolts. Anyone who knows computers knows a harddrive cannot take shocks without catastrophic failure. Besides, compact flash cards are really cheap and available up to 5gb. I have heard nothing but praise for the Garmin 2610 durability and functionality wise.

01/10/2005 - You can get the 2620 now for around $940 and the 2610 now for around $620.  I got mine from Getfeetwet (http://www.getfeetwet.com) about a year ago for $950.  Very good company to deal with.

Lowrance

You are right about the functionality of the Garmin but it get low marks for durability.  Look at all the professional desert SCORE racers.  Nearly 100% of pro desert racers use the Lowrance 3500 or Lowrance 4000.   They will tell you the Garmin can't survive in those conditions. 

The Lowrance automotive GPS units are also waterproof so you can switch it from your truck to your boat or motorcycle.   We have been using the iWay 500c in our rig and the hard drive has done very well. 

http://www.lowrance.com/automotive/Products/iWAY500C.asp

The iway has more functionality than the Garmin and can even store 160 CDs.   At the Consumer Electronics Show last week Mobile PC magazine gave the iWay the award for best concept. Garmin used to dominate the automotive market but lately they have been falling behind.