what is the best mod-chip for the ps2?

[trilidar]

Don't claim to be an expert, but I do have some experience with this due to owning like 4 PS2's. For an NTSC U/C the following appears to apply, with regard to DVD-Rs:

Origa: V1-4 (best all-around chip)
Neo4: V4 only (and it appears that select datecodes only work)
Neo4.1: V3-4 (may work with V2, but nobody's tested yet)
Messiah: V4 only (no swap all the way. The best)
R-Mod: V5 and now V6 only (solderless)

I know it's a pain, but there it is.
Tril