I purchased my 4xInnovations bumper in January 2011 for $650 + shipping. I was one of the very first customers. It was slightly less expensive than many of the bumpers you see here from bumper manufacturers but I do think the design has some inherent drawbacks that I'll eventually fix. 1) My turn signal holes were too small to use with the turn signal lights that were sent out. I have still not fixed that and the lights are duct taped in from behind. (Yes, I know that I haven't fixed it for almost 2 years now. Also, the lights supplied are a different resistance than the stock bulbs so they are dim and blink fast. Adam was unable to tell me what resistance they are so I'll eventually have to go purchase another set to make it work. 2) The side stinger tubes are in the way of the lights so I have to remove the bumper to mess with the lights. 3) The upper surface of the bumper doesn't extend out far enough to mount deep lights without modding the grille 4) I had fit issues on mine that made the bumper and fender rub. However, I used that as an excuse to purchase / install a 1" body lift so I might consider that a plus

5) The design uses some 1/4" steel as the main structure that supports a winch. It is very heavy duty but creates a "void" area that is impossible to paint, clean or get into very well. I'm meeting with a fabricator that will build my rear bumper in late October, so I'll address this then by cutting out some of this material and reinforcing another way. 6) The front mounting bolts are exposed to the elements and have rusted on my truck. I've seen other bumpers that have found a way to avoid that and would prefer that method on a bumper if I were to buy one again.
I don't want to just knock on the bumper. I took it on a tough trail riding trip with some seriously modded jeeps back in February 11 when I first installed it. I broke my CV 5 minutes in and had to get tugged out of 10+ obstacles with some serious pulling that would have exposed any weakness on the bumper. Additionally, Adam has since corrected the light hole size and I could have been more specific on where I wanted the side stingers. However, now that I've found a good fabricator, I'm going to design/build my own rear one rather than buy it.
Here's a picture of the bumper while I was in one of the obstacles on the trip.
Here's some other pictures at different angles so you can get a better idea on what it looks like.
Here you can see how the same 1/4" piece of steel is bent and used to provide the surface to mount a winch and to act as a vertical support going from one side of the bumper to the other. The area under the winch mount area is very hard to access.