Kharmel, at the moment I am using the pesfan V3 file which I have edited to fix a few things. There is a link for this in the Option File thread in the Editing section. ISSextreme are making a new file right now without the screwed up transferred players and I'll post that in the same thread when it is out.
Byrnee, I don't know much about the chip but I will look into it. If you're good at soldering and trust yourself inside your PS2, you should be able to install any chip you like.
Yes, patching is easier than using a downloaded option file through X-Port but patches only work on chipped or modded machines - which is only for the minority of people on here. I read someone's opinion that only 5% of the PES/WE players know about patching and use it. That leaves a whole lot of people who don't know or don't have access to using patches, and for these people, I would say that an X-Port is a much better option than the Ultimate Update disk. For a patch, someone has to convert the option file .xps file into a .ppf so it can be imported and not many people know how to do this yet. My recommendation of an X-Port is over the update disk only due to the reasons previously mentioned. I just don't see the point of going for a quick fix which is the update disk for each version of PES when an X-Port sorts you out for every PS2 game you could ever play.