EDIT: With the recent releases and additions, Woodwinds and Solo Strings are also complete in their Synchronized version.
Unfortunately, this isn't the case...
Solo Strings are *almost* intact. The only thing missing (as far as I'm aware) is Violin II and Cello II fast reps with the ability to cut releases. Violin I's fast legato is also screwed up somehow - it sounds permanently phase-y compared to the VI version.
The SYN-zed Woodwinds leave a lot to be desired. This is extremely unfortunate, because BY FAR the biggest perk of the SYN-zed Woodwinds is the addition of Timbre Adjust. It handily fixes the problem of phasing velocity layers in solo instruments, which almost all the woodwinds are!
The problem is that we gain Timbre Adjust, but we lose so much of what makes the VI libs "best in class":
The most glaring omission are the various legato types. The main legatos of SYN WW are actually the janky-sounding perf_leg_looped patches from the VI version, originally meant to be tacked on to the END of a phrase, not used for the whole thing (hence why it's found in the Resources folder for the VI version.) Sure, there are more velocity layers, but these velocity layers are just the four velocity layers from the sustain patch attached to the looped legato patch.
Another glaring omission is that there is no actual perf-legato_fast patch. Instead, it's a truncated version of the looped legato auxiliary patch. What makes this even more awkward is that there's also no dedicated perf_trill patch - instead, it's integrated into the "Fast" articulation, which means if I want to use the perf_trill patch, I have to switch to "Fast" (which doesn't sound as good as the missing "pure" fast version) and hope I'm playing the right speed for the hidden perf_trill to occur.
Core SYN WW is also missing perf_grace (I was told that was integrated, but I could not for the life of me figure out how to trigger it when comparing it side-by-side with the VI version) and perf-marcato_fast. The result is significantly LESS options for legato than before.
Core SYN WW is also missing an entire English Horn, and the perf-legato_lyrical from the Piccolo.
The single woodwind packs add perf_grace back into the mix, but that's about it. All of the SYN-zed WW are missing half of the perf_rep patches, either the slow or fast versions.
It's frustrating because the biggest strength of the VI Woodwinds is their incredible legato patches, but their biggest weakness is the obviousness of the velocity layer Xfades, esp. in the legato patches! The biggest strength of the SYN WW is that Timbre Adjust handily fixes that, but it's biggest (and completely avoidable weakness) is that it ditches a lot of articulations, many of which are fundamental to why the libraries are worth buying in the first place.
Volume balancing is also very strange. Flute II is extremely quiet compared to Flute I, and the French Oboe is incredibly loud compared to everything else.
The SYN-zed Woodwinds are the only VSL libraries I've returned. I genuinely don't understand the rationale behind some of the above omissions. If the SYN WW were simply a 1:1 port of articulations from VI into SYN, then it would be ideal: all the great sounding flexibility of the VI version with the wonder that is Timbre Adjust, well worth the price of admission. At present, however, it feels stitched together and bafflingly incomplete. If Dimensions Strings and Brass can remain fully intact, why can't Woodwinds?
VSL, if you're reading this, please consider following the example you set with SYN Dimension Strings and Brass. If you want your customers to switch over to SYN completely (and charge them crossgrade prices for it), it makes all the sense in the world to make the SYN-zed versions a superior option. At the moment, the only libraries this makes sense for are the Dimension libraries and Solo Strings; everything else is at best a trade-off and at worst a downgrade.
Alternatively, adding Timbre Adjust to VIPro would be amazing. Wishful thinking, but just throwing it out there.
EDIT: I forgot to add another perk of SYN - the volume-dependent release samples that trigger with dynamics patches. These are great polishes to the libraries. On that note, it would be fantastic if the SYN-zed Woodwinds incorporated the "Multi-Shorts" functionality from the SYN-zed Solo Strings. However, if I had to choose between that or actually including all the articulations and original flexibility from the VI versions, I'd choose the latter in a heartbeat.