I plan to go with RC when I add flares. They are a moderate width with otherwise subtle styling. I think they are the only option available that offers some paint matching and doesn't require adhesive to the body.
The Mabett flares are so narrow that I don't understand the appeal. I want width, not simply a plastic look. Plus I've been disappointed by questionable design and low quality in Mabett's fender lights. I wouldn't give them more money even if I liked their plastic cladding.
I was seriously considering adding fender flares to my Tremor until I saw a post from someone who took their flares off after a few weeks and found lots of dirt and grit had gotten in between the fender and the flare. I changed my mind when I saw that.