@All: I agree that the NTSC version, which I can only try in Classic99 :-( , is faster and harder. I choose to play PAL because it's the version I played when I was 14 :-)
Ok, I will play a little bit more with the PAL setting, and later I will try to switch to the NTSC.
By the way, I think that the NTSC version of the TI99, it the canonical version, because it was much more used than the European version. (for the same reason I consider the PAL version of the Amiga the canonical one, even though the very first version was the NTSC).
@Mizapf: Indeed back in the days, when playing Parsec on my PAL TI99, I always thought that Lift 2 setting was useless! :-)