Ive posted on the pedal issue before but whatever.
All I can say is take a look at the MXR DSD.
The thing blows the Boss Metal Zone away in my opinion.
Doxidan is right too.Alot of guitar players dont know to use a distortion pedal in the clean channel or with the gain down.Unless you like massive hum and feedback,its not the best idea to use a distortion pedal with your gain up through your lead channel.