I have used hydraulic disc brakes and mechanical (wire) disc brakes. Yes, it's not the easiest to set up, but on my Hayes MX5, it works well enough that I have

I have used hydraulic disc brakes and mechanical (wire) disc brakes. Yes, it's not the easiest to set up, but on my Hayes MX5, it works well enough that I have to seriously worry about locking my brakes :)