They all do the same job mate, I don't know of any downsides of any of them **, the Active is nice but I'm a fan of the HRC for some reason, guess I like the OEM look. Each to their own ** other than for me it's easy to get HRC parts.
I ran a 1/5ths on my TL and that was pretty brutal, I know a few guys who ran 1/6ths and say they were great on track but a bit much for road use so god knows what a 1/8ths would be like!!