Yea the suggestion to loosen up your support edges is meeting in the middle between realism and normal map and screen resolution. I don't ever recommend taking a hard surface model into Zbrush, unless it is absolutely necessary. In this case, pinching and 'striping' is just bad poly flow. Practice and understanding are key…
kk Thanks a lot for the input guys! I really appreciate it and it's very valuable! I think I get the fact that for high poly game models, you need to ease up on the support loops. A lot of times I do a couple of double smooths, then a final regular turbosmooth, since I"m going for photo realism. Is the reason for easing up…