A Lot Depends...
...on what you are going to be doing.If you are doing mostly fair-weather day-sailing and don't stray too far from home, then either a Magellan 315 or Gamin 48 or E-Trex will nicely do anything and everything that you want, and for only somewhere between $125 and $200. We own a M-315 and a G-48, and they have served us incredibly well for several years. Don't go beyond this unless your sailing habits justify it. Just go to a store, play with each for a while, and pick the one that feels easiest to use.If you venture into broader coastal cruising and have the opportunity to get surprised in unaccustomed locales by fog where you can't see 200 feet off the bow, as we did this past summer, then we heartily support the previous recommendation of a chart plotting capable device. In such a situation the ability to see where you are in real-time at the helm without needing to take the time to plot coordinates on a paper chart can be priceless, and it doesn't take a $$ fortune to get one that will do that. DON'T plan on using a low-end plotter for detailed navigation; they just don't present enough detail information to allow that. But they will show you where you are, and after motoring for 3 hours in pea soup fog, that can an indescribable comfort, believe us! Next week we will be investing $750 in a Garmin 176C chartplotter ($600 for the device, $150 for a chart chip). But then we frequently venture 30 to 100 miles from home mooring.If you are REALLY serious, go spend $2000 or more on the new Garmin 2006 or 2010 chart plotters. Even if you don't want to buy one, just go LOOK at them; they are wonders to behold!Bottom line; you can spend anywhere from $125 to $2500. It all depends on what you plan to do, what you want to be prepared for, and what you are willing to spend. But $150 and a M-315 or G-48 will probably do you well.Carl and Jules/v 'Syzygy'