Fucking awesome game, better than its prequel. Take note this is DVD9 so dual layer, works "best" with a PS2 that has a modchip, it doesn't work so good with swapmagic and on the HD
1st you MUST patch the ISO with this toxic patch to ensure it works better (reason is there is a high possibility that when the games goes into the 2nd layer the PS2 has problems reading it so the game freezes at that place, happened to me for rogue galaxy ^^; thus wasting a DL DVD-R).
link for toxic patch: - http://www.mgforums.com/forums/showthread.php?t=38554
When its patched grab a Dual Layer DVD-R, taking note the "-" it won't work with "+". I highly recommend Verbatim, they do the best DVDs. Then burn using nero or alcohol at the SLOWEST burn speed then play away ^^