AYAWS wrote a review of Pieps DSP Smart Transmitter on March 9, 2012
I just bought a second one so I could donate my older one (still fully functional) to a friend. The DSP is the fastest 3-antenna beacon I've used. I've tried the tracker, tracker 2, and ortovox 3+. It's also the easiest to use -- especially in multi-burial practice with the flag function. If you want the best, the DSP is the way to go. Trust your LIFE SUPPORT equipment to no one else.