I currently have the older style GCC installed on my car along with a VPC and FCON. I stumbled across a newer style GCC for a reasonable price and wanted to know if there is anything significantly different from the two aside from the obvious aesthetics. I've tried google and the only thing I can find is that the older style makes adjustments in 500rpm increments while the newer style makes them in 700rpm increments. Would this make the older style a bit more precise? I just want to know if it will be worth the hassle of swapping the units. Any input is appreciated.