Hi David,
I'm an E-Trac user. I was a die hard White's user for over 25 years. I started out with a 6000D Series 2 in the early 80's, then it was on to the DiPro with the target ID meter, Quantum XT, Eagle Spectrum, back to the 6000 XL Pro and then the DFX twice. Sold the 1st DFX and went the the XL Pro for a few years, sold the XL Pro and went back to the DFX again. My buddy had the Explorer II and hunted with me and my DFX at an old school built in 1917 a few years back. We were hunting the back sports field and he got a strong Quarter signal at about 8-9" deep. He called me over to check it out with the DFX. I couldn't even get a signal. I played around with the settings and still couldn't get a signal. Anyway, he dug it and it was a 1921 sterling silver track medal from the school. It was just a hair bigger than a Quarter. I couldn't believe it! I heard the strong audio from the EX II with my own ears and could not believe that I could be missing deep targets like that with my Whites. Don't get me wrong, I loved the Whites detectors and found plenty of coins with them over the years including lots of silver. I used to have 5, 6, 8 and 10 silver coin days when hunting back then. They are good machines.
Anyway, my buddy got into a cash crunch and wanted to sell his EX II w/Sunray Probe. Instead, I sold my DFX on Ebay and used that money to buy the EX II from him. Absolutely no regrets. I have found Barber coins(never found any with a Whites), deep silver, wheats, etc going back to every site that I had pounded with the various Whites machines the last 25 years. I was in a crunch once, sold the EX II and then bought a Quattro. Sold that and bought an Xterra 70. Sold the Xterra 70 and bought a nice used E-Trac this year. My set up now is the E-Trac, Garrett Pro Pinpointer, 8" Sunray coil and the Grey Ghost Headphones. So far this year I've got about 20+ hours on the E-Trac and have found over 200 clad coins, 2 silver Roseys, 1 1935 Merc, 28 Wheats and 2 sterling silver rings. ALL FROM WORKED OUT SITES!
I did go through a period where I felt that I picked the wrong detector with the E-Trac. My problem? Swinging too fast. I've slowed down considerably and find I am pulling coins that I missed with my other Minelab detectors. As far as the new Whites V3, it looks to be a great machine so far. Someday I may try one out. But my experience has proved that the E-trac or any FBS detector is the way to go for the deep coins. As far as discrimination, I pretty much dig everything anyway as I am going after the gold rings. I have been far too lazy in the past to dig all those pull tab signals faithfully.
No problems with the Whites, but I like the Minelabs better (E-Trac)