I've been using a Line6 HD500 pedal board for over a year and it is an awesome piece of hardware, but some of the songs we play as a band require wah to be used throughout a number of songs and switching the wah on and off is a bit of a chore so I needed an 'always on' style pedal so I don't have to worry about switching.
I was recommended a Morley Bad Horsie by a good friend in another band and after some research into this style of wah I decided to opt for the Tremonti Wah as opposed to the Steve Vai Bad Horsie due to it having a mix of the Vai modern wah sound and the more traditional sound which fits my style better.
What can I say about the build quality of this pedal other than it is built like a tank! Solid, weighty and feels like it would take a good battering before giving up the ghost.
You can adjust a 10db boost which makes it useful when not being used as part of a solo so you cut through over another guitaristw without engaging your lead channel boost. You can also adjust the switch time through a small screw inside the casing if you want to alter the amount of delay after releasing the pedal before the wah effect switches off. You can choose from 0 to 2 seconds, which is pretty handy.
Overall the sound is pretty good, but I'm not blown away in comparison to the HD500 range of wah tones, but this is more of a personal preference to any shortcomings of the pedal itself.
My only complaint is the battery compartment door which is a pain to remove and clip back in and I'm pretty sure I'll end up snapping the clip before long. A better, more sturdy option would have been appreciated. If you use a power supply then this really won't be a problem.
All in all, the Morley Tremonti Wah has made a nice addition to my effects, alongside the HD500 and TC Electronics Polytune 2 pedal to give me a versatile live setup.