Does anyone own a GSG 1911 or a Chiappa 1911-22?

I could spend twice as much for a Marvel conversion for my 1911, or i could spend half as much for one of the two 1911's I asked about. If you own one, or both, give me your rundown on it. Problems, malfunctions, issues, high praise and accolades. Accuracy? Reliability? Ammo versatility? Help me out here. I think I want one, but then I think about it more and think I might not. I'm looking for first hand experience here. Thanks.