From a logical perspective scan strength would make it easier to separate sig’s by % (greater precision) at 32 au so you can remove everything that isn’t in the range your searching for but scan deviation would make it easier to skip scaling au steps and still land inside, personally I like what you have currently instead of omega but I guess both have it’s benefit’s.
I haven’t tried the Grade virtue omega yet so can’t say 100% You might still be able to skip just fine with omega and still get better strength. Wish it was possible to unplug without destroying for testing purposes lol.
On many of the low and mid grade sets there are better options for slot 6 than the Omega implant, but I don’t think this is one of them. I don’t have personal experience with the Virtue set, but I’ve seen this question a few times and the consensus seems to be that the Omega is significantly better. The reason is that improved scan strength reduces maximum deviation at a given scale, while also getting the benefits of improved strength.
You should be able to do a double shrink on sigs with moderate scanning skills alone and good equipment (that’s what I’m currently doing). I would think virtue implants would allow you to do a triple shrink on many sigs (or so I’ve been told). That said, the biggest benefit of improved scan strength is being able to ID sigs at much higher scales so that you can either finish scanning them down or ignore them - that’s a huge time saver. The good scanners seem to be able to ID at about 4AU.
If you want to identify each sig type, ditch the ones you don’t like and scan to 100% only the ones that interest you, go for the Omega. If you want to scan 100% all the sigs, go for the AP-610.