Hard Drive Docking Stations

[Destiny]

As my quest for external USB hard drives continues - I'm starting to look at USB hard drive docking stations now. Mainly because it is cheaper to get a bare 3.5 inch internal HDDs. Its going to be mainly used to plug into the USB ports of my media players to feed it my digital library. I've seen some going for $15 & $20 on AMAZON - are these reliable? And also will they support 3TB and higher HDDs? Any recommendations for brand and where to buy is appreciated... thank you in advance!