I think the Moshow QanT is as good as the MB figures, but the Turris Babel is pretty bad. I do like how the LEDs work on it though. Just wish they had made a better effort.
I also have the Moshow Aile Strike, and it is a fantastic figure, also as good as the MB kits, coming with a metal grand slam sword it can actually hold, and a great LED system lighting the head and thrusters of the Aile pack. Unfortunately, it's now sold out most places and is running over $600usd.
I picked up the Metal Club Strike Freedom recently, and it's fantastic. I don't have the original to compare it to, but it holds up well next to the MB Destiny. It also came with the wings of light and dragoon stands, and all for under $200.
I also have the metal club 00 Seven Sword, both the Inspection Red, and the trans-am figure that comes with the GN Blaster Sword, and the 00 w/ Riser. I don't have the original to compare to, but some people have said the tampo markings aren't as good but since they originally ran for under $100, they're well worth it.
And I also have several of the original MB figures if they were reasonably priced at the time: 2 Red Frames; one with flight pack, one with the tactical arms, the Blue Frame, I scored the Gold Frame, new, at a ridiculously low price, Freedom, Exia R3 kit, Destiny Heine custom version, and the F91. I have most of these displayed together with the knock off and they all look like they belong together. And honestly, if Bandai actually kept up with demand and priced the MB kits better, there wouldn't be a market for the knock offs in the first place.