Which version of Back to the Future is better?

I watched the Back to the Future trilogy in English on Netflix. I think it's much better in English than in German because there are no problems with lipsync and I also like the voices better. With the older German version there was also the problem that all voices are higher (because of the PAL and NTSC stuff), which sounded kind of weird. What do you all mean?

I bought the German version on DVD and I didn't see any problems with lipsync and the pitch was also good. Have to compare that with the Netflix version. But now you've brought me to something xD

Have a DVD box in German and had no lip sync problems ^^