Personally, I would try the generic_15 preset and, if that works fine, try your luck with arcade_15. Most SCART TVs with be fine with this.
Out of the 50 to 100 SCART TVs I've tested, only one was stricly PAL only. Really, most SCART TVs can sync to anything in the PAL to NTSC range so it's better to use one of the presets mentioned.
Out of interest, what brands are your two TVs?