Yup, 2 separate loops would be the idea... DDC-Pro for the GPU/NB loop prolly, Storm + RD-30 @ 15v on the CPU (G7 if I'm lucky, heh).

With the small digital sensors in the TBan BigNG I could control each loop's fan independently.

As for grills, as a 10yr heavy smoker it would have to be those thin-mesh metal grill air filters, or the rads will be clogged inside 2 weeks

Ah well, I'm forward-planning 6 months in the future already, I oughta stop doing that

In any case, I'd want it done on the upcoming horizon series of UFOs.

Oh and I'd want to find out if push or pull is better with 140mm fans on a PA160 before getting the case made, obv