Fish N. Texas lakes only. It's for a Helix 10. I fish Twok most of the time. Looking for the best one to show humps, drop offs etc. Thanks in advance as usual. Y'all are greatly appreciated.

Lakemaster is better marked and easier to use if you have a Humminbird.

That's what I'm needing to know. Thank you

I like having both. My Lakemaster is better in some lakes, and Navionics is better in others. If I were to have just one, I would go Navionics.

Navionics is much more accurate for my home lake. Lake master is way off.

This^^^^^^

I have had both. Navionics gives me a better depth range and reads the trees better as far as a layout of the lake.

Guess I shoulda made a poll. Navionics seems to be ahead. Thanks guys.

Hands down Navionics. I have had both, and the Navionics is far more accurate on all lakes I have fished. For several years I ran both map programs on the same boat. I can take you to multiple points and humps on multiple lakes where the LakeMaster chip is way off. I hear that Lake Master is better on some lakes, but I have yet to fish a lake that would lead me to agree with that statement. Also, if you ever do any saltwater fishing the LakeMaster chip is completely worthless.

i prefer Navionics however there are inconsistencies on Lake Lewisville where I fish. I have an older chip though, and it's likely they have updated it since 2012 since I purchased it. So part of my complaints appear to be self inflicted since I haven't taken the time to update.

Navionics

Go check out the Navionics Webapp....that shows you all of the latest and greatest from Navionics for free, so before you spend a dime you can decide if they are right for you. With the Sonar Chart program Navionics is averaging around 20,000 updates per week. Now granted, those may not be all the lakes you fish, but it is a good example of why the free updates that come with the card are important to utilize.
https://webapp.navionics.com/#boating

Or if you may have an old card, whether it be a LakeMaster, Navionics or any other brand, you can save some cash and buy the updates card. This card is the same data just gives you a price break due to already buying another card.

I can update my old card to the latest and greatest? How?

Never have used Navionics. On Cedar Creek Lake there are many areas where Lake Master is way off. However, it is useful enough for me.

I swear by Navionics. Has saved me from running into a sandbar at night on a few occasions.