Surechecks new parent company have just announced a new version of their "cheap" traffic box that now tells you which way to look in one of four directions. That is pretty helpful if it works because when I owned the previous version that just told you in the traffic was high or low I found this could be a bit unsettling.
Having said all that it did spot a plane once that I didnt. In fact had it not bleeped I dont think I would have ever seen it and it would have passed by me without me ever knowing it was there.
Because it bleeped I was looking all over the place for it and it came out of a cloud just behind me.
http://www.zaonflight.com/