The previous posts have all given great options. In my case, my choice was price driven which ultimately led me to the Kuat Transfer 2 model. We like the platform design for quick and secure loading. It's reasonably light if you need to remove it (I don't keep ours on our SUV being fearful of forgetting it back there and hitting the hatch open button on the dashboard). I have SKS thermoplastic fenders on my bike and, while Kuat doesn't recommend it, I have had no problems locking down the front wheel by just compressing the fender to the tire. I have driven hundreds of miles this way with no problems and no damage. YMMV. My Transfer 2 will work with 1.25" or 2" hitch receivers (we have a 2").
At $330 or so, I think it's a heck of bargain.