MXR Super Comp is awesome... I noticed that the BBE Sonic Maximizer Pedal can really add sparkle to distortion, like prescence... good pedal... hopefully they let you try them and if they dont do what you need you can take them back... pedals can be hit or miss... the comp can add hiss or make it sound better, just depends.
I would save my money and get good pedals, new ones also, unless you can get in there and clean the pots... and such. Dirty pedals kill tone I hate them!!!