The new versions are integral to the episodes now. I can't seperate one from the other, especially when they make significant improvements to the show. I'll restrict the commentary only where this occurs.
Integral to your viewing of the show perhaps, but not the show itself. The episodes stood on their own for nearly 40 years with no enhancement and I and many others were perfectly content.
The new FX, to me, are primarily a novelty. Some are fun to see and do contribute, others are distracting, to me. I know there are plenty of opinions on either side of that. Not arguing that I am right, only that there is no right answer. Thankfully the originals have been preserved.
The ship shots are very hit or miss.
They're not hit or miss at all, they always used the same CGI model after they modified the first one. The only thing "hit or miss" is the understanding people bring to the FX...some complain the new FX are there, then go on to complain that they are not state of the art...well the reason for this is to make them more seamless to the 60s episode(duh). Using Enteprise or even Phase II type FX would not fit with the episodes! The other side of the coin suggests they didn't go far enough with the FX! Well, I think they did a rather measured remastering, though I definitely would have made more changes if I had been doing it.
Merely expressing an opinion. Just because the model was the same, doesn't mean that concept or execution of the shots were always consistent. The ship and certain of the objects it encountered at times appear less realistic (or at least less convincing) to me. Heck, the Amoeba in "The Immunity Syndrome" looks like a Flash Animation in TOS-R, so I do feel the execution was hit and miss.
The original VFX have been a part of the show since the beginning, so especially for anyone who's seen Star Trek before, the CGI will immediately call attention to itself.
My point is that when Warped9 had a question about the new VFX (possibly prompted by the misleading widescreen shot from COTEOF) he started a new thread to ask the question, so while I have contributed to this tangent on new VFX, I feel it may be more appropriately discussed in the thread about TOS-R, and not one devoted to an analysis of the episodes with their original FX intact. I'll be bowing out of further TOS vs. TOS-R debate in this thread.