I like SH alot, but yeah, I can understand people's gripes about it. Although, SH1 is unpolished perhaps for the fact it was a PSX game that was ported to the PS2 before it got released because the PS2 had come out. At least it doesn't look/sound/play/suck as bad as The Summoner.
SH2 and SH3 are almost twin games, not because they have the same setting or anything, but because they have also exact same(SH3 did change a few things but not enough) gameplay and some plot points seem outright copied from SH2, especially "jokes". It's also arguably not as good as SH2.
But yeah, I still have to try Koudelka, but I hear it's super and well, doesn't have any of this "what another generic jrpg"
For those interested, if any, SH2 is also much lengthier than the others in the series.