I have a Whites M6 with a sunray probe, the probe was an essential investment. I had a cheap handheld probe at one point but lost it along the way when it fell out of my pocket somewhere thats when I bought the sunray since it mounts inline and clips to the detector.
I haven't gone out in a few years now but from just detecting local parks and a few old home sites I managed to find a couple hundred in clad coins, junk silver jewelry, a handful of silver coins lots of junk etc. My best find was a 10K gold ring found along the fence of a tennis court I think I dug 3 or 4 pull tabs out of the same hole then the gold ring popped up.