Open transparent, tight, no mud or bass kill?
Answer is?
Answer is MI Audio Crunch Box - awesome for 100$ - best of all my drive pedals, cleans up great has huge gain without mudding and a good bottom end (others in my collection are: Marshall Guv'nor I, Diamond SE drive, DOD Malmsteen, Halo Rust Driver, OD808, Fulltone Soul Bender and ZVex Octane3)
The ZVex Box Of Rock might do a great job too, but more than twice the price