I was twice burned by the IBU so now very shy on that product. I liked the Clark but I didn't care for the wonky combinations of controls. I admit it was an older TK24 so maybe they have improved over time. I know I am a broken record, and they are expensive and possibly outdated but you really cant go wrong with Tamiya. They are pretty much bullet proof, simple to set up and the standard for a reason. If you hunt around, you can find a set for a good price on the second hand market.