Best used laptop or Mac for under $200?

I'm looking for a laptop used for around $150 with and without a hard drive (I have one I can install). There are many options on eBay but I hate HP and Dell, I've always had problems with them so those are a big no.
I've been looking at Fujitsu, Lenovo, Gateway, Asus, etc.

I want something just to mess around with for trying different OS's or a Mac book, light gaming such as Half Life 2, The Elder Scrolls Oblivion and such and other mostly basic tasks.

I'd prefer to stay away from Toshiba Satellite laptops aswell.

What brand or model would be the most reliable in my price range (used)?

Look for a unibody aluminium Macbook. A Macbook Pro 2008 or above, Macbook Air 2010 or above, a Macbook late 2008 or above