Its interface, compared to other emulators, is clear and simple. It allows you to load games both in CD as well as ISO images. It supports memory card emulation and cheats using a specialized interface.
It has an advanced BIOS and plugins manager that allows you to test which of the two provides best game performance and quality.
Thus, PCSX-Reloaded is a great option when reliving your Playstation games without having to leave your GNU/Linux behind to do so.