Humminbird Lakemaster is now on Version 2. I bought Version 1 two years ago and I like the maps in it. Version 1 Cannot be upgraded to Version 2, so I took this as an opportunity to buy the Navionics + Regions East card on Walmart dot com last month. I have 2 Humminbird fish finders in each of my two boats; a gen 1 Helix 5 DI and a 698 with SI/DI in my 16ft row boat, and an 859 DI and a 959 in my 21ft Bayliner Trophy.
Both programs show similar contours on the 2 inland lakes I've used them on, but I haven't used them on Lake Ontario yet, or the finger lakes. Neither one will show all shoals in a lake, but they both do a good job of marking the basic contours of the lake bottom.
Lakemaster Version 2 has added some new lakes and contour detail over version 1, but I don't know how much better it is than version 1.
If you PM me your email address I will send you a PDF copy of the lakes that are covered in the Navionics + Regions East and Lakemaster Version 2. It's enough lakes to make your eyes go crossed just browsing through the list.
The Navionics card needs to be loaded from their web site before you can use it. The Lakemaster card came pre-loaded. You will probably want the SD/MSD card, not the Compact Flash card.