No '90s player* has a comb filter worth using, so go for the TVW750PCIE if you are more interested in capturing LD than native S-Video, YPbPr, or digital formats.
*I would just say "no LD player" but I don't know anything about the units made in the '00s when good 3D Y/C tech could have been incorporated.
By the way AnctuFaalb, when you get a chance could you edit this post to note that you're referring to the different USB version? Or have you seen AGC problems with both TVW750USB (no 3DYC) and TVW750PCIE (has 3DYC)?