The 215(D) and 216(D) are both SATA while the 115(D) and 116(D) are both PATA.
I’d much prefer getting a 115/215 to a 116/216 but you are probably out of luck if they are out of stock on the 215(D).
The D[B]BK[/B] just means that it is the black version of the D model while DSV is the silver version and the D is the beige version.
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EDIT: As an alternative consider the Optiarc AD-5200S/7200S/7201S/7203S (or *A for the PATA version).