I use Sun Ray pinpointer almost exclusively, so I ordered a Sun Ray for my new E-Trac but it's on back order. With that in mind, I ran out and bought a HF pinpointer. I figure $16 for a pinpointer, for a couple of weeks use, is a pretty good idea - it's bound to last that long. One thing I discovered right off the bat and my best advice for anyone purchasing one:
Throw the battery away that came with it - it's only good for a couple of hours anyway.
Use a good Duracell or Energizer and you can really see a difference in the performance. I'm not saying it's great, but it's much, much better than it is when using the lame factory battery.