I have a broad question about why "expensive" pre-amps & interfaces are "better" than inexpensive ones. I have read some interviews recently with some electronic musicians who are at the top of their game, doing soundtrack work, making albums etc and they all swear by these top of the line audio interfaces and pre-amps. Before anyone jumps at me to say that experience really dictates quality, let me say that I get that. I really do. But as someone on a budget and who does not have easy access to scrutinize (A/B test) a Prism Sound Orpheus interface vs my little Apogee Duet, for example, I have to wonder what the difference really is? Why do respected professionals favor the sound of these high priced pre-amp/interfaces? What exactly makes them a cut above? I guess I am asking what is the difference in quality? Is it that they color the sound favorably? Is it reliability and consistency? I realize this question is rather simplistic as say, why is a BMW better than a Hyundai... But I figure the smart folks here who use this gear would be the best people to ask. I appreciate your time!