This is a truly awesome piece of equipment for the price! I am highly impressed! I bought this rig last minute for a music video production at a gamble, after pouring over all the reviews of similar rigs I settled on this one. taking a real chance due to the fact it had no reviews. Now I take real pleasure in that fact cause I get to write the first one, that's how pleased i am with my purchase.pro's- This is quality! The rig is metal, and nicely finished. All fasteners including the lock down nuts are metal as well, no cheap plastic. The follow focus is smooth and really does a nice job of adding the perfect amount of resistance and there is a attachment point for a zoom mechanism too. The rig has attachment points for all accessories you can imagine and is very well engineered. The balance is nice and really adds to stabilizing my canon 60d.con's- The barn doors are plastic, how ever the attachment points are octagons and create friction to keep the doors in place. The handles due to the amount of leverage do move even with the lock down nuts tight, but not enough to be a issue for the weight of my camera and rig and I imagine a little fussing with it would be all it would take to make them tighter. The unit did not come with a single instruction! this should not be a problem though since I think any decent film maker/camera operator should be half engineer to be taken seriously! The dry erase follow focus ring wasn't attached, and I had to disassemble the indicator to install it but they are made to be replaceable in case they get to dirty or you wish to use more then one to save your markings.unknowns- Customer service, cause I haven't had a issue.I do have to say the rig arrived in 3 days after ordering, which was faster then I requested... all in all I would rate this as a top notch piece of equipment and I am a very happy costumer!Update; I am extremely impressed this is a awesome rig for the price! I bought it back in April and it's now September, it gets almost daily use and has not failed me yet. It is fully customizable, you can completely disassemble and reassemble it. I do believe any photographer or filmmaker worth their salt should be 1/2 mechanic and if you are you will find the ability to adapt this rig into any configuration for any situation a TOTAL plus! As for the mattbox the doors are no loser then the day I bought it. If they ever do give up the ghost I will be totally happy to replace them with a metal mattbox which will be a welcome upgrade but as of now it's not important to me, they continue to work fine. As a finally credit to this fine piece of equipment, I have not had to tell one perspective buyer that the rig could not be adapted, or not work for any of their specific situations. I answered yes you can to all!