I agree with the coil approach stance Critter, but in some sites the sov can null so hard with such a slow recovery from the null that targets can be easily missed. Have u ever used a mixed mode machine? Like a Nautilus or a Whites in mixed mode? Whole new ball game for sure. I have heard so many targets mixed in a THICK iron strewn patch of woods with my Nautilus that the Sov would never hear. When u hear the iron and the nonferrous target simultaneously you'd be shocked what you've missed. A target like that will cause the Sov to null and possibly give a hiccup of a signal, but most of the time those hiccups are a false on the edge of the iron target and not actually a nonferrous target. Some machines with a fast recovery offer the ability to hear the iron grunt and the nonferrous target tone on every swing whereas you'd be struggling to grasp that high tone with the Sov. Don't get me wrong, I love my Sov and it's iron blocking ability but in some cases it just pays to be the guy with the faster processor in this day and age, or just use mixed mode lol. While some do use explorers and sovs in Europe, most use XP adventis and Goldmaxxs, Red Heats, Tesoros, and other faster recovering machines with the ability to also swing a bit faster.
And as far as the Musky, yes I do sometimes notice a sharper response with the faster swing. The best part about the Musky is that the depth is equal fast or slow and with disc high or low. Killer machine for fields, only thing I don't like is it's lust for hot rocks lol. They sound like deep coins, smooth, quiet, but always pinpoint funny and that's usually the tell tale. Excellent comp machine, lightning fast recovery and not sweep speed dependant. With a multitone or TID option, I would never use a diff machine, but alas it's just the basics with this relic monster.