I sometimes watch a remastered episode on Netflix, having seen most of them in broadcast syndication cuts 4-5 years ago. I've only found one or two sequences to be off-putting, such as the rendezvous near the end of "Is There in Truth..." just before Miranda and Kollos disembark - but that's an episode I have a VHS tape of (I have none on DVD) so I can see it "properly" when I want to.
On balance I think a great deal more was added than was taken away. I especially enjoy seeing nightsides of planets on occasion (which the original series never attempted) and such newly added establishing shots as those in "Amok Time," "Requiem for Methuselah," and "The Cloud Minders." And I appreciate that certain elements were enhanced but otherwise left alone, such as the planet hanging midscreen behind the title/opening credits of "Metamorphosis."
EDIT: Still a commander? When do I get my promotion?
On balance I think a great deal more was added than was taken away. I especially enjoy seeing nightsides of planets on occasion (which the original series never attempted) and such newly added establishing shots as those in "Amok Time," "Requiem for Methuselah," and "The Cloud Minders." And I appreciate that certain elements were enhanced but otherwise left alone, such as the planet hanging midscreen behind the title/opening credits of "Metamorphosis."
EDIT: Still a commander? When do I get my promotion?
Having said that, the original effects for all their faults are still more natural. The physical model is a thing of absolute beauty even when she's being seen in ratty looking reused footage, and no amount of CGI can ever have the same soul. So the original effects are pretty much my favored option.