I kinda like the plastic SKS fenders (plastic doesn't ding or rattle or make noise). You can get them in pretty much any size you need to fit tires from 23mm to 60mm. The ones i use have optional stays - I don't use the stay on the front and I can just slide it off/on at will. The rear, I just leave on. Never understand why people don't use a rear fender. I even race crits & CX with it on - but my favorite is just a seat post mount. No aero issues and no wet butt, nor brown stripe on my shorts and jersey.