Hello, I've tought about getting a rack unit for a while. Something with delay(most important), chorus(2nd) and modulation effects go third as importance. Something around 500$. I want something transparent, becouse I'm very anal about my sound. The fact is that I have a DRRI, so no FX loop. Someone guested me to put a DI Box between my speaker and the speaker line out. Will be a better idea to put a FX loop in my DRRI? Please, shed some light!