We´re currently working on a HUGE update to the US. Playstation set.
All the issues with the old one, like multi-part rar files inside is going to be fixed.
Furthermore, these are VERIFIED dumps! This means the data has been checked for validity. Every single game has been checked, and has passed the test! No corrupt ISOs, EVER!
They´re also significantly smaller due to a wonderful tool called ECM;
ECM removes random data from the ISO files which makes them compress ~18% better that normal. This means smaller files, and faster downloads for you!
We´ll add ECM to the PSX download section when the new set is up.
The set is being uploaded as we speak, but due to the extensive size it´s going to take a little time.
Cheers!