Anyone out there use Aero Pickups? I hear great things about them. I called and spoke to Larry today about his pickups. He was very nice and answered all my questions but he gave me more information than I can handle. Can anyone describe what the difference would be between a PHC (Parallel Hum Cancelling ) and an SHB (Series Hum Bucker) pickup? He gave me a technical answer but I need a "sounds like this" answer. Thanks for any info.