blueriverjerry

No problems of significance..cheapo energizer NiMH last 9 hours+..never had a lockup or other need to restart. I do prefer Topo 7 to Topo 8 in some respects. It does lose lock on occasion, briefly, but that poses no problem for my use, and the mag compass can be pretty jumpy which is, again, not a serious problem for me. Curious how an individual would determine if problems are "rare" and whether the difficulties are "technical". Don't personally know any other PN users, or for that matter any Oregon/Colorado/Magellan users or what sorts of problems occur. My experience with the PN40 has been entirely positive. Jerry

Two primary uses are boating/fishing and hunting. I have all the seamounts (tuna hotspots) within 40 miles of San Diego, as well as harbor entrance channels and the best Catalina primitive beach campsites in my old Magellan 315. Also my elk "honeyholes" from Colorado trips a few years back are in the 315 which has served flawlessly for years. The PN40 with its imagery is far superior and has similar info for Oregon's cascades and offshore areas. Use the PN40 a bit for routing, with considerable caution, as well, and as a tax preparer it occasionally proves useful in determining mileage for client's business auto use. As a Groundspeak member for several years with only 11 finds, you might surmise that I'm not as dedicated as some. Jerry