Here's a quick lesson in fx loops and signal path. All the tone you love from your amp is created in the pre-amp. An fx loop allows you to plug your guitar into the amp...get that nasty tone...then send that signal to the loop before sending it to the speakers. This works great for time-based effects (ie chorus, delays, flangers) etc...
I would put your delay after everything in the loop, it should be last. Try and think in terms of how the signal is processed:
Signal from guitar...to pre-amp...to delay...to zoom (let's say with distortion)...
Now your delay is before your distortion...which means your delay is getting distorted and probably sounding muddy. If you put the delay at the end then you are "delaying the distortion" instead of "distorting the delay."
Time based effects sound a lot more crisp and keep their edge if they are in the end of your chain.
I say loose the zoom and the digitech and get some good ole fashion pedals...I wouldn't use (and this is just me) an effects processor in the same chain as pedals and/or another effects processor...it gets to hard to keep track of the signal process. If you get those pedals your thinking of I would run like this:
Guitar -- Ibanez TS -- Amp -- FX Loop Send --> Wah Wah -- Chorus (I like the Cool Cat by Dano) -- Delay -- Tube EQ (goes last because you want to EQ you the whole signal).
Hope this helps.
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