Simon is fundamentally right, you should primarily look at specs, and let the manufacturer choose the best internal materials and construction techniques to achieve the specs; it shouldn't matter.
This being said, it really does not hurt to understand what goes into manufacturing of parts, because the spec sheets may fail to capture some important or difficult-to-put-in-numbers parameters.
I have observed that many engineers, especially of older generations, do tend to rely too much on their intuitive generalization based on the "types" or "construction techniques" of the parts, and rules of thumb thereof. "Use a high-ESR capacitor at regulator output for stability." vs. almost all modern regulator ICs from the last 20 years are stable with zero ESR. The problem is, this unofficial data gets old; while spec sheets don't lie (except when they do lie!).
But it would be stupid not to augment your design process with such experience, just keep the main focus on the actual data instead of generalizations and always be ready to challenge your own generalizations.