Hi Lisa, I've tried spaghetti squash, it's expensive here (UK), and all i ever got was stringy mush.....so I gave up on that, lol.
I've done courgette and carrot 'ribbons' with a peeler, they're OK......used a mandolin to make jullienne also. The reason why I'm hoping the spiraliser will be better is that it will make 'noodles' that are thicker than I can...