Having been getting a little into the D.I.Y. stuff recently, I'm coming to a deep appreciation of low-quality tools. You can get incredibly cheap knockoffs of virtually every power tool known to man, meaning that for under $50 you you can get just about anything that buzzes, cuts, nails, staples, or drills.
The obvious good thing about tools like this is the simple fact that they're available. I need to cut a tree down, I can either spend 5 hours hacking at it with an axe, or I can plonk down $99 and pick myself up a chainsaw. :D Sure, you could go and spend $600 on a STIHL that's virtually identical, but for me, the $99 one is better.
The less obvious good thing, and the reason that in my opinion it's even better is that, while the two probably do similar jobs of actually cutting wood, the STIHL won't break down. This is a bad thing, you say? Not if (like me) you like doing DIY stuff, and you like learning about how things work. I don't think I've owned a single China brand tool that hasn't broken at least once. In each case, I've taken the thing apart, learned exactly how it works, fixed it (cheap generally implies simple, so they're easy to fix) and put it back together. Ever afterwards, I'll not only have the power tool, but I'll understand it.
If money's no object, you just want a tool to get the job done and you don't care how, then by all means get the expensive version. But you'll learn a lot more by using and fixing the cheap one, and honestly, it'll be more fun. :)