Best portable hard drive for mac

I had the worst thing that could ever happen to a macbook happen last night to mine. I spilled gatorade on the left side of my macbook pro. I quickly shut it off and turned it upside down to drain. I eventually did the rice trick, filling a zip lock baggy with rice and put the macbook in. Turned it on in the morning and boom it works. It now made it clear I need a external portable hard drive. Any suggestions?