Hey Swamp Dog:
Both Humminbird and Lowrance make good graphs and have good customer service - I use one of each. If you haven't used a graph in a few years you will be amazed at the features and resolution you can get now without having to spend a lot of money. Although, there is an extremely wide price range in graphs on the market. If you can come up with a price range that will narrow the search. Then do some research and decide what features you want - like whether you want a combo unit with GPS.
I like having a little bigger screen than some of the entry level units have. You also have a choice of cone angle and side-scanning features and other features that may or may not be useful to you depending on your lakes and methods of fishing.
When you get your search narrowed down post the models you are concidering and folks that have used those models can give you specific likes and dislikes (if any) about them.