by timbaer » 20 Jun 2012 04:08
As people have said, it really depends on what kind of music you want to produce. When it comes to electronic, you can almost always get the sound you want by just taking a simple synth and tweaking it until it sounds like awesome, or by sampling and filtering and such. PinkiePieSwear uses Nexus almost exclusively, for example, and it seems like half of the electronic music world swears by Massive.
Orchestral and other traditional styles are a different story. They can only be synthesized to a certain standard of quality. As Makkon said, however, your composing ability and instrument quality are pretty independent of each other; a well-written song using stock string and piano synths will still be great. Sampled sound libraries just help turn "great" into "fantastic".
...they do have other advantages, though. Few synths could ever imitate LASS's Divisi feature, or the auto-rhythm tool or the anti-machine gun thing or whatever. Not without a ton of work, anyway. And having the ability to go right from working out a harmony between legato cellos and sampled crystal bells to laying down some heavy percussion beds sampled from a world-renowned orchestra, just ten minutes later, is pretty incredible, if you think about it. So, yes, the higher-class instruments also have a lot of convenience and extended techniques that give your songs elements that would otherwise be difficult to include.
Oh, and multis. Good heavens, multis.
Ignore my gushing. Is it better? Yes. Of course it's better. You pay for the quality. Is it necessary? Absolutely not. Think of it like buying a guitar - a more expensive guitar might have a really nice sound, and some cool features, but it probably won't make you any better at guitar, and most of the things you would ever need to do with a guitar you can do with one that's infinitely cheaper, or even free.