I would suggest you take the time to read through the RS2 thread and then decide if you want to deal with the quality control and delivery issues they have been having for almost a year. You will find no such complaints about the Jays units.
Haven't read through the entire thread, but the drive unit appears to be superior on the Project and so many people are raving about the sound. The reported issues are concerning as are the problems with the I2S compatibility. Seems like a big oversight on Project's part.