I've had a Rycom for the last few years and have been happy with it. It's hard to give much advice now because the technology changes so fast that they are out of date in a few years. My general advice is don't skimp. Get the best you can afford. And definitely try it out for a while before buying. I had no problem getting the suppliers to let me try one out for a couple days, as long as they know you are serious. It really takes some time to get proficient with a new locator. With experience you can get to understand the nuances of your equipment and the subtle things it is trying to tell you.