Cheesegrater
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I think the 055 clone movement tier list is as below
1) Clone using Gen Parmigiani/Vaucher movement parts
2) Chinese Clone Vaucher (lots of sellers are using these now as the prices have come down a lot)
3) ZF Clone
4) Any other Miyota based movements
They used Parmigiani parts because the RM055 movement uses the same parts that are all Supplied to Parmigiani and Richard Mille by Vaucher. Vaucher is a movement parts manufacturing company. Parmigiani was a good choice because their watches loses a lot of value and dealers could buy them at cheap prices and make them into clone RM movements.
so #1 is basically like a 20% gen franken watch.