what fish finder to get?

[beenfishin?]

What is the best CHEAP fish finder? I got a lowrance X47 now. Would like one that will show fish a lot better without spending big money. Don't care for all that gps and other stuff, just want to be able to identify fish. And if there is a way to do that with what I have, why can't I get it to do it? Shows structure fine, but can't tell the differance in structure and fish. And I ain't no hurry to get one, just want to get some kinda idea so I can maybe get a decent one this summer.