A. Yes, different brands and even different series within each brand have many differences. We have a HUGE display wall with many different RCA's including all the different levels of RCA's within the Stinger family from low end to high end. Each display shows the differences between the different types of RCA's

B. iSimple is a brand under AAMP of America's Peripheral Electronics leg. We stock all their products and interconnects and have been installing them since they came out last year. We have probably almost 100 installations (about two a week) for our retail customers and our new car dealerships we service. It is good stuff when installed properly and directions are followed to a "TEE". I have had only one faulty iSimple product since day one (bad PXAMG iPod controller out of the box) so I would say their build quality is great.