Avoid the EB, because according to some suggestions (unverified by Festool), certain batch of (motor?) parts used to make the old EBs was defective or below the usual standard. Which batch of saws was affected has never been revealed...presuming that defective parts story is true. Admittedly, even the REB is too new to form a definitive stand on it...but at least it is covered for three years.
Unless the seller is asking for less than $500, why take the risk? (If out of warranty, you may have to pay for the repair cost which could run up to $500 to $700 assuming I remember other people's experiences correctly.)