what's the best/most user friendly ps2 emulator?

Question

it is best if it's free ;p

Answer 1

The best emulator is PCSX2. You can download it for free from:

http://www.emulator-zone.com/doc.php/ps2/pcsx2.html

Almost all emulators for more modern systems are at least somewhat difficult to use; you're going to have to get over that.