Vinyl is certainly different. I had been bugging Waves for years to create Waves Vinyl (just scroll back through their Facebook history to see). They did that and then some--superseded my expectations!! What I needed, personally was a plug-in that could accurately emulate how a Master or pre-master would generally be expected to sound on vinyl. Some of the attributes I wanted were:
- Needle placement
- different cartridges
- different speeds
If you're a vinyl fan, you know that as a needle moves toward the inside of the record drastically increases in distortion. Although this is sometimes pleasant. You can emulate that with this plug-in, something not available with others.
Even though they didn't include the function of speed, you can place the needle on the outer area of the record to get a better idea of 45 RPM, and the most inner area for 33.3 RPM. It's also been really good for things like guitars and vocals.
No, these are not redundant, although there may be some factors, such as wow and flutter you might find overlapping. These are completely different plug-ins and modeling efforts.