Funny you should ask because I just received my bumper hitch from Amazon on Wed and it is on my to do list. I bought the Curt 19101. On Amazon it was listed at $59 but there was a used one listed for $47 with free shipping. I figured how bad could it be? I got it and it looks brand new. I'll post a pick later on today.
I'm not saying it will definitely happen to you- but my buddy got a bumper mount bike rack. He was happy as a clam until the night his wife texted me:
"Sitting by the side of the road while (husband) puts the bikes in the camper. Some car waved us down and said our bikes were dragging."
Turns out the whole bumper twisted. Not sure if its attachment points broke or what- I never looked. But he keeps the bikes in the truck now.
This is so frustrating. I have already had to have the roof replaced. After I took delivery I crawled up on the roof to install a bathroom vent cover and found a 5 inch gash in the rubber. I took it back to the dealer and they kept it three weeks. Now I just picked it up last week and the cable doesn't work anymore. The dealership is 5 hours away and I am spending a boatload of money in gas. GRRRRRRR