If you are in the market for another pulse unit, try the HH Pulse. I have one and it works great on the beaches here in NJ. Has volume control, freq adjust, thresh adjust, light, water proof, 2 diff coils ( I have both...easier to pin point with the 8 inch but the 11 covers tons of ground and goes really deep).
I have an Excal too, but I have to hip mount that sucker which is a pain. Sometimes its just nice to get out with the HH, dig everything and see what happens. I can swing that baby for hours.
Yesterday at the beach there were lots of nails and iron, and I dig LOTS of junk, bud did manage to pull a 14K name charm outta the wet sand....with a nail in the scoop too. Probably luck, and the pulses are a pain in junk, but the HH does go really deep and with the freq adjusment, you can set it to hit gold hard.