Where did you get your games from? I think that most (If not all) those games you mentioned are compatible with both PS2ESDL and OPL. USBExtreme/USBAdvance is the one that is probably not even compatible with 40% of the games out there.
Originally Posted by ydobp
Games like GT4 might need a bit of extra care: They are DVD9 games. Improper ripping might result in it becoming unbootable.
With OPL and PS2ESDL, your games must be defragmented. PS2ESDL has a check on file fragmentation, but I have this bad feeling that it might be giving false negatives.
Unmodified SCPH-77006 with SM 3.6
SCPH-39006 with M-chip modchip, SCPH-10281 NA and refurb Seagate 80GB HDD
SCPH-10000 v1.00 with SCPH-10190 PCMCIA NA and SCPH-20400 HDD unit