I have 3, a pinerello-ish bike , and 2 open molds. Only one of the open mold bikes is currently built up. It rides just fine, is pretty light weight, not the stiffist.
I have a mc-015 also from miricle trade, I have the one with the integrated seat post. Well the seat mast topper bolt cracked from over tightening. It was munufactured to large and wouldnt hold it position. So I added a shim. then the seat started slipping. At about this time I discovered that the rear drop out was very crooked. So crooked in fact that the derailuer pivot bolt sits at an angle, so that when it swings if you go from large to small ring. the rear derailuer ends up between gears. Simply put as the derailuer goes back and forth it moves in and out also. Miracle trade kept me on the hook with promises of service and parts shipment that never arrived. As soon as the time expired on the paypal buyers protection, they stopped answering my emails.
The Pinerello thats not a Pinerello is a good frame. Its a bit heavy, very stiff, nice ride, comfortable. but it also has a cockeyed rear drop out. not as bad as the miracle trade bike but enough to be annoying. I can adjust the pocket for the hanger to fix it but I have moved on to other bike frames for now.
In short, I probably wouldnt do it again. Its to much a roll of the dice.