I have Silka too and it is definitely beautiful at what it does. But it is too incomplete and therefore a supplemental library to something more flexible. Insolidus isn't much different in this. I suggest you save your money and save up for something more comprehensive like Dominus Pro. Buying choir libraries because they are on sale is a quick road to regret. Get what serves you best regardless of any sale. The workflows and features differ too much between libraries, you have to do the research and decide on features, workflows, walkthroughs, reviews alone.
Only if it isn't a good library. Silka is a good library and $170 seems like a good price.
Well... based on your advice, I held back and didn’t purchase either. The sale is over. Both are $598 Yet again. I’m reminding myself that I did the right thing
Don't worry, it will come on sale again. Do your research and think about it. Is Dominus Pro really more complete? One of the differences in philispohy is that 8 Dio doesn't think that you can do word building very well in choirs yet. It can't sound as good as more generic sounds, it's always going to sound more artificial. But maybe you need actual words in it, then in that case something with a word builder fits. Most of the time though generic sounds just work and meaning from the listener comes out of them.
Does Dominus pro have a children's choir? In some ways children's choirs are even better because of the higher tone that can be heard better through the background. Often a choir can be hard to hear if it's with a lot of other instruements because there is so much mid range. Children's choirs can cut above that sometimes. Can Dominus Pro do an epic sound like Emperioum Choir? So is Dominus Pro a one stop shop? Does it put a lot into extra resources that maybe as a whole don't sound as good? 360+ legato sounds... is that necessary over the 40 I think Silka has? Does that make it more complete? Does that make it sound better? Maybe it does. I still think that Dominus Pro isn't a one stop shop though.
The actual size of those two libraries is similar, at 50 gb but Silka has put more into the arcs for example (which I think are more valuable and useful) than other things like a word builder.
I do not think you need to own both Insolidus and Silka though. They should have been one choir honestly. And 600 bucks for Silka is too much. If you can get it for $170 that's a good deal. That deal will come around again in the future so don't worry about missing it. It will come back. Take that time to research and find that target you want which might be Dominus Pro. That' will probably go on sale too right?