I too like the Troy Pros for the fact there is no switch to switch or bump, plus that cord is the best I have ever seen on any headphones.
I use a set with my Explorer, but had to add a amplifier for my hearing and have a set of the Sun Rays for a spare. On the Sovereigns I like my Timberwolfs as they are louder and the tones I can hear better with the Timberwolfs.
Peoples hearing is different, but I find any of the headphones made for detecting seem to work good for me, while those for home stereo just don't do much for me but break and I have yet to find a set that I can hear decent with. I just tried a set of Koss for over $100 that I was told was the best, nothing much for volume or tones and don't think they would have lasted a day or so for detecting.
On my T-2 I tired the Sun Ray Pros, the Troy Pros, the Timberwolfs and the Uniprobe and find the best I like was the Troy Pros and the Sun Ray Pros, but the others worked great too.