The Samsung is a SLIM internal drive. If you're intending to put a drive in a half-height (normal desktop size) slot, you're not going to want that one.
But that Samsung is the only one guaranteed to do scanning out of the box. No, it does not support jitter scanning, but then, unless you get an iHBS112/212/312 (or, in OEM parlance, a DH12B2S or DH12B2SH) or one of the clones of that LiteOn drive, you won't be scanning jitter anyway.
Depending on the age of the drive, the WH16NS40 (and the BW-16D1HT, which is a rebadged LG) could be crossflashed to a firmware which does support scanning (no jitter). However, the WH16NS40 you get could theoretically be based on the same hardware as the 16NS55, which would prevent you from crossflashing to gain scanning. (The BW-16D1HT also runs that same risk).
Many people say that the Pioneer generally nails quality burns, but the LG drives are also good. The slim Samsung drive isn't guaranteed to be quite as quick or have the same quality.
(The old LiteOn drive I mentioned does not write as well as the LG and Pioneer models you've listed).
I would say, go LG ...NS40 or ASUS and see if you get old stock or new stock. If it's new stock that cannot be crossflashed, then it's up to you to decide if you want to find the external Samsung SE-506CB for scanning. Or try to find one of those LiteOn models on eBay.