I’ve tried the following:
– Fender bender variants, basically they are useless, catch minimal amounts of mud/water/clart
– Rockguardz PG350/450, pretty good and keeping the mud/water/clart from your face. Found it scoops mud into the fork seal area at times, which isn’t great.
– Powa Dfender, same as the rockguardz for keeping you clean, but it takes no time at all to fit, which is a bonus if you are putting bikes inside cars. Waiting for the official kit to fit them to boost lyrik 29er forks, fit the old non boost ones fine with a bit of fettling.
– Crud Catcher XL, best coverage by far and keeps me cleanest, doesn’t scoop mud into the fork seals, it is by far the most ugliest!
For me its Powa Dfender when its not properly muddy (one stays in the car year round, just in case) and the crud catcher gets fitted through winter.