Audio/Video system selectors ?
 

I'm looking for System Selectors to buy. I'm looking at multiple choices here. I was wondering what do you guys think about these System Selectors? Which is the best? where do they sell these ?

Psyclone PSC01 System Selector
https://images.bestbuy.com/BestBuy_U...7660578_sa.jpg

Pelican System Selector 2.0 (8 a/v inputs)
http://g-ec2.images-amazon.com/image...e35f2010.L.jpg

Pelican System Selector 2.0 Pro
http://ak./db_assets/large_images/566/202139566.jpg

Intec HDMI Component/AV Selector
http://www.inteclink.com/test/images...cube_5239L.jpg