Ok so i just got some new gear for really cheap and i need some help

I got a Marshall JCM900 with a Marshall Jmp-1 Midi Preamp, giving me any type of Marshall sound i can dream of. I need some effects to go along with it and im looking for a multi effect rack. The reason for rack is to save space in my bands rehearsal space. I don't know much about rack effects and i need to know which one is should get and stay away from.
i wouldnt recommend a multi effects, i find they suck tone and are pointless. i would personally get a delay or a phaser
Quote by R_H_C_P
You're joking right?

It's like comparing sex to sticking your penis in a blender.