I searched this forum when I was researching getting an AMC-400 to haul my WR cross country, so I just wanted to leave some observations for anyone else who comes along researching carriers.
First of all it's $129 and it is worth that much, especially or you're going to use it very rarely as I do.
Here are my gripes:
The ramp is way too short if you have a high hitch. (I drive a Wrangler with a bumper 6 inches higher than stock). The ramp is about at a 45 degree angle when attached.
The tie down points are in the center which means you'll have straps rubbing your plastic.
The wheels drop down pretty far into the wells once the bike is all the way on, making it pretty tough to unload a 300lb bike, since both tires simultaneously have to rise up a few inches to roll out.
This last point is one I could use some feedback on if anyone else owns one. Because of the height of my car and the weight of the WR I found it really tough to get the bike started off the ramp. The technique I eventually figured out was to leave the handle bar straps on, but loose to keep the bike up. Hold the bike up with one hand and with the other grab and roll the front tire until the tires get out of the wells. Then undo the hooks and roll the bike down the ramp. I would recommend getting a longer ramp, but once you do that you could have probably bought a nicer carrier with a longer ramp.
Here are some other things I'm thinking about doing to make hauling the WR easier.
1. Get an SMC-600R instead (not much more than an AMC-400 + 82inch ramp, and 4 tie downs in better locations)
2. Hit the gym and stop being such a wuss.
3. Carry my Wrangler on the back of the WR instead. (It can do it, I removed the flapper).
Anyway if anyone else has experience with this carrier, or any carrier really, hauling the WR, I'd like to hear about it. Thanks.