Summary: This is probably the only gps I will ever buy, so I did a lot of research. I could not decide between the Rino 530, 60CS, & the 76CS. In the end I obviously went with the Rino 530, and I will tell you why.

First I will compare the pros and cons of these three models.

76CS-
Pros- Floats. Has 115mb of memory (about double any other hand held gps). A built in tide chart (If you don't work at sea, I'm not sure how necessary it is, but it sounds fun). AA battery pack. And the other standard quality features that the other units offer.

Cons- All reports lead to a poor antenna due to being internal (my brother owns this model and purchased an external cable that serves as an antenna and he said it worked great after that). The format of the unit is awkward. The buttons are above the screen and the width of the gps, kind of requires the use of both hands.

60CS-
Pros- Most of the bells and whistles that the other two have, with a strong, convenient interface. The external antenna creates a great signal. AA battery pack and the least expensive of the three. This unit looks like the rino (minus the radio antenna) but with the button structure of the 76cs (only with the buttons on bottom).

Cons- Less memory than the 76, a few less extras (does not float, etc.). Even with this being an older model, everyone with whom I spoke told me that if I were going to get the 60 or the 76, to get the 60 because of the external antenna's increased signal.

Rino 530- Having the radio is a fun feature. The listing states that it has 14 mile range, which I am content to accept as 5 miles, so far the range has been adequate where ever I have traveled in a 8 mile range (it cuts out a little sometimes, but it works pretty well). The icon to see your friends and family is fun if you know somebody else that has a rino. My father and best friend purchased their rinos the same time I did, so there are three of us. By myself the radio feature would be a lot less exciting (though my Motorola walkie-talkies can sink up and broadcast with the rino on the same channels). The rino has everything the 60 has plus national weather broadcast (I enjoy that more than I thought I would. I push a button and the radio broadcasts the report for the area).

Cons- The battery pack (I almost did not purchase this unit because I wanted a AA battery pack for multiple day trips in the mountains, but I contacted Garmin and they assured me that there is a new AA battery pack you can purchase as an option). The radio does cut out a little while I am communicating. The unit locks up sometimes at random intervals (though Garmin is really good about providing free updates from their site for individual units. So I am confident that will be fixed soon through updates).

Through personal searching you will be able to find more general comparisons. I had a hard time deciding. What put me over the top was finding out that AA battery pack will be available. When I first received my rino I was very careful opening it, so if I was not satisfied I would be able to resell it. I broadcasted on full volume and the signal was strong enough to distort my television signal, then I new this was the unit for me.

I have had the rino for about a week now, and I have loved it. The road guidance feature is awesome, but the map I have is out dated and distorts it (so I purchased the \"Garmin City Navigator V7\" and it is much better. My gps is still new, so I use it everywhere I go (just for practice). It beeps to notify me in advance when I am going to turn. It is so helpful.

The radio works well. The antenna works well. It takes about a day, but once you get it down, it is very simple (oh and before I forget if you hold down the power button it will turn off, if you push it once it becomes the back light button). Anyway, whatever you decide I hope you enjoy your gps. I have been very pleased with the rino 530.