As far as I have been able to tell all these duplicators use standard computer DVD drives. In case of the Nimbie, I was told it is the Sony Optiarc 7240 or 7261. If you prefer another drive you can remove the stock drive and replace it with one of your choice, it's just a matter of removing a few screws. Same with the Primvera. Not sure if the warranty will be voided, though. The Sony can be easily replaced by a real Plextor if you have one.
The problem is that the basic ripping software needs to be extended to allow for automatic changing of the disc and this additional driver support for the Nimbie exists only in G3data ripper at this time.
Most duplicators like that do not have the features we need to properly rip redbook audio. Read up on the advanced features EAC uses then check hydrogenaudio and other forums to see if the drive has been tested and known to work properly.
I have used EAC for many years and have tried dbpoweramp. I currently use the auto ripper built into Vortexbox (vortexbox.org). I have ripped several hundred CDs now on my VB. I did some ripping tests on discs before settling on the VB ripper and can tell you when ripping unscratched discs all three rippers returned the same check sum. Only a very few tracks on some scratched discs reported errors, and my reaction is so what? I've ripped 700+ CDs to date, have 2000+ more to rip

, so if on 700+ CDs, say a TOTAL of 10 tracks were not bit perfect, who cares as long as they play back without glitches? I mean if VB or EAC or dbpoweramp did not make a bit perfect rip of the Beatles original recording of of 'Love Me Do' but the rip plays well from my server, am I going to sit down and spend a zillion hours trying to get a bit perfect copy or get a another copy of the CD? Not bloody likely

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To sum up, IME most quality rippers, i.e. the big names, produce bit perfect copies from unscratched CD almost everytime. If the odd CD here or there returns checksum errors I play the track to see if any audible dropouts/clicks/pops exist. If not, I ignore the errors and move on to the next disk.
I take the pragmatic approach; sometimes I think audiophiles are too obsessive about second or third order effects to the detriment of their listening pleasure

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