Probably none of them.
MGS - Loved MGS but not sure I'd want to play through it all over gain and I already have the the bleemcast! disc for it, loathed MGS2, wasn't interested in playing MGS3. MGS4 had its moments imho but the series seemed to have peaked with MGS and is looking long in the tooth.
Silent Hill - My PS3 is one of the earlier models featuring PS2 b/c and I already have SH2 so aren't much interested in the series' other titles.
ZotE - Moderately interested in this one so will see how well it turns before deciding whether to get it.
Own: Jaguar JaguarCD Lynx 7800 Dreamcast Saturn MegaDrive MegaCD 32X Nomad GameGear PS3 PS PSP WiiU Wii GameCube N64 DS GBm GBA GBC GBP GB Virtual Boy Xbox Vectrex PCE Duo-R 3DO CDi CD32 GX4000 WonderSwan NGPC Gizmondo ColecoVision iPhone PC Mac