Line mixers for parallel effects routing?

Iv been using a digiech dl8 and polara reverb in my be's effects loop(delay going into reverb). All sound great individually but sometimes ill run the reverb and dl8 together. When i do this it can be hard to get the mix just right. Would it be worth getting a line mixer to put things in parrallel?

-a quality line mixer is a powerful tool-
-An ALESIS factory rep highly recommended running all effects with a line level mixxer as opposed to stacking your effects for better sound quality when adding/removing individual effects from the signal chain-

A line mixer is the way to go. RJM has a very cool one, not very expensive.

Xotic has a pedal version thats cool.