I auditioned a set of cables with Eichmann bullet plugs recently & was very much impressed with the quality of the sound & the excellent connection they made. As for the noise/shielding issue, these particular cables sounded so good I ordered a set, although I opted for XLR ends.
As for them being plastic & cheap, back when I rode Harleys & they came out with a non-metal primary belt, both the old man at the shop I took my bike to & I scoffed at the idea. Now the belt has replaced many final drives as well as timing belts on automobiles. They're not plastic but neither are they metal. Personally, after trying them out, I'd have no problem with them in my system.