I recently got a PS2 slim and wanted to have improved picture and sound quality since I didn't feel the default composite cables were doing the job. I looked around for PS2 specific s-video cables, since my TV doesn't have component inputs, and I kept finding third party brands that didn't seem like a good idea.
Through research I found that all three Playstation releases can use the same cable to connect to a TV so I searched for PS3 S-video and found these.
The construction in them is great, because the cables are very thick and have gold plated contacts. They feel very strong and hopefully will last a long time. The cables also have shielding in them which prevents interference from nearby appliances and other cables they might be draped over.
As for picture quality increase, I found that there was a rather noticeable improvement in picture quality using these cables over the default cables that came with the system. Considering my TV doesn't have component cables, that makes these cables the best that I can get for my TV.
If you are looking to hook up a PS1, PS2, or even a PS3 to a SDTV that only has S-video as the best connection, then these are for you. If your TV has component cable inputs, I would recommend using those as they will provide better quality.