Very similar Chips as far as the High Definition Lake Pro maps are concerned both the LakeMaster and Navionics Chips have BS in 3 foot contours, they do share Lake information between the 2 companys so alot of HD lakes are the same.
I prefer LakeMaster over Navionics because of the Road Mapping they include on the Chip very helpful for finding hunting land and wildlife management area's along with the points of interest which can be very helpfull.
What Chip you decide on really depends on where and what lakes you'll be fishing.
I have used Navionics for several years now. The other day I viewed Lakemaster on one unit and Navionics on another, same location. Tell ya what Lakemaster won hands down. I sure am a believer. MUCH more detail. Skeeter
I am running a H20 with a Lakemaster and I agree that having the detailed maps is well worth it! I use a suction cup mount with the locking cup and am able to mount that in my truck and on the winshield of my wheeler. Another piece of equipment I cant believe I didnt have before.
I use Navionics. However I am most likely going to switch to LakeMaster after seeing the differance. At least for Minnesota. However if you fish a lot of different waters (and I mean a lot!) the Navionocs may be the way to go. I'm not sure but I believe the Navionics offers more lakes per area. But then again I fish a ton and could never cover that many lakes in 3 or 4 lifetimes. I also believe they both can be upgraded pretty easily.