Back when you purchased boxed versions of plugins and installed them from multiple CDs I cannot tell you the instant gratification when I loaded it up and heard things like the steel pedal guitar and some of the lush sounds. When I first made the (huge decision at the time) to spend $500 on Omnisphere v1 I was worried it would be a waste of money given my mediocre skills and having used mostly just Korg plugins, free VSTs and samples/sound fonts at the time. No argument they don't sound great but for someone like Me who isn't a piano or keyboard player, can barely play anything interesting, I need something that has more interesting sounds out the gate and like you mention, Omnisphere just has such a diverse soundscape especially because it is a complete hybrid sample/synthesis engine it has a bit of everything in there and makes it super easy/fun to find some new inspiration that I cannot achieve with just messing around with a modelled synth in such a short time. V collection is great if you are hardware synth guy/keyboardist and want recreations of these without the hefty cost of hardware. Click to expand.Yeah it really comes down to what kind of sound and playing style a user wants.

What is omnisphere