No reflections? I'm not surprised, you have to enable raytracing to have reflections. The amount of pixel samples is pretty high, that means a lot of antialiasing, up to the point of blurring the complete image. For a sharp render I usually use a value of 3-5 pixel samples. The black lines are often eliminated by checking displacement maps and setting the displacement bounds to 1.000. Choosing another bucket size also often helps. Gaussian or sync filter are also better than box filters, though they are slower. Gaussian gives the best results in my opinion, though sync is better with strand-based hair. I'd suggest looking up the render options in the manual and see what they do. By applying a balanced set of options the renders usually look fine.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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