I have not tryed this chip but it seems to be the best. Here is some info on it. "DMS3 V2.0 ModChip
The DMS3 (Devolution Memory System) is the most advanced upgrade solution to your PS2 recordable media playback requirements needs. The DMS3 has been designed to exacting standards. Rest assured that you will enjoy bullet-proof reliability and stability from the DMS3 design. The DMS3 sets the standard for design by operating within the safe power requirement limitations, avoiding placing stress on the internal architecture of the PS2!
A rigorous testing procedure and expert development team has led to the completion of this very fine design. Customers will enjoy a future proof design since the DMS 3 Mod Chip is flash upgradable.
Two other world firsts in Direct boot ModChip design have also been achieved: The playback of any region DVD movie on the PAL PS2's and the unlock of USA/ASIAN consoles to playback other territory NTSC movies!
The DMS3 Mod Chip also removes green screen. Itīs well placed to cater for everyone's needs. It is fully compatible with every PS2 model available in the market including the JAP 10000 and 15000 models. There is no need to configure the DMS3 Mod Chip to your version of console. An inbuilt detection function is included to ensure hassle free installation.
Direct boot of PS2 Imports/Backups (all media, including DVD-9 and multi-disc titles).
Direct boot of PSX Imports/Backups (anti-mod and multi-disc titles supported).
DVD Region Free.
PSX import screen position fix.
Boot any PS2 executable directly from memory card. (DivX, Mp3, Logo etc.)
Loader code contained in flash and upgradeable via software by the PS2 to support future feature enhancements. 2 copies of loader code stored in flash. Copy 1 is not upgradeable. On bootup, the hardware will determine whether copy 2 is valid and if not, fallback to copy 1 (protects against reflashing failures).
All console versions supported." (http://www.modchip.com/ps2/dms3order.htm)
Hope this helps. Best of luck.