You never can tell, seems like there would be one still sitting on a show room floor somewhere in the boonies. Todd Stock wrote an interesting post back in February about the differences in the 299 and 299A. It's re-posted below for the OP's information, with full credit to Todd:
You did get the best of the 14" saws, but in adding power to the package, Delta made a cost engineering change that moved them in the direction of the imports, quality-wise.
The problem with the new Delta 1.5 hp is that they upp'd the motor speed from 1750 to 3450 (to keep the price point for the motor and drive train identical to the old 28-299) and replaced the excellent balanced steel and iron pulleys that were supplied with the old 3/4 and 1 hp saws with the same crappy cast alloy sheaves that the Jets and other imports are using. This drive train vibe is more noticeable than on the imports because speed is doubled and power is higher on the new Deltas.
Junk the alloy sheave (the motor is likely a machined steel sheave and is probably OK) and invest in a cast iron, balanced Browning sheave for the driven shaft - about $28 from MSC. Make sure you get the proper bore (3/4") and correct 4L pitch diameter (NOT the same as the outside diameter).
Also - swap to a link belt. These are the fixes that Iturra recommends for the Jet and other imports, and appears to be necessary for the new Delta
1.5 hp as well.
I hope Delta gets enough complaints to change the drivetrain back to a balanced system - just one of the many things that justified a higher price tag for the saw."
Hopefully the above will provide some information if he does have the problem with vibration that you, and others, have reported.