The question is what have you castrated to only be using 30gb of your 120gb drive?
Given that you've paid so much for a 120gb drive (me too, btw

), you ought to be using as much of it as possible... There's no reason to be wasteful, but at the same time, the space gives you the opportunity to not even have to think about nuking the page/hibernation file, or to do any of the other dubious things that the internet often suggests.
When you have 80-90gb free, it's almost a shot in the foot to be symlinking everything in from the spinning disk. It'd be possible to just take the plunge and move almost everything onto the SSD. That would bring a slight speed advantage
and less symlink-hassle
More relevant to the original poster, considering you are already sub-32gb, can you list the applications you have managed to install, and what sacrifices that you do now that you didn't do with a spinning disk (killing the pagefile, having to make symlinks, running the optimiser, etc.)? That information would help him make an informed decision