I installed the AWE SwitchPath remote recently and I absolutely love it. The Grimmspeed modules are nice for the price but IMO AWE's remote is much more convenient. You can open/close the valves at any time via wireless remote. No need to plug and unplug the module every time you want to change...
This is another option. I think I might go this route so I can change it whenever I want to from inside my car without having to get out and unplug anything.
AWE Tuning SwitchPath™ Exhaust Remote | AWE Tuning
All cars have issues, there are a few Z06s that have been deemed lemons too. The thing you have to remember is that there is a MUCH higher chance that an owner will vent online if they have issues with their cars. The vast majority of owners are issue free. I will say that the high oil...
Another thing to note is the ViBE wheels actually have more front caliper inner barrel clearance than the stock CF wheels. I have their 19x11 square track setup on my non-R. My setup is the only one that won't use the OEM lugs but I like the look of my open lugs. Feels more racey :-D