Some Questions About Master System / Mark III

[/markiiisystem]

I have a few questions that I can't seem answer through my Googling. I'd appreciate some help as a new Master System collector.

1. I know that PAL games play on NTSC-U consoles, but is there any difference because of the 50/60Hz refresh rates? I wonder because of expensive games like Sonic the Hedgehog that are so much cheaper across the pond.
2. If I purchase a Japanese Master System MK-2000, can the FM audio be turned off when I want to listen to the PSG audio?
3. Is there a better alternative to getting a Japanese MK-2000 if I want authentic FM sound and a complete SMS experience?
4. Is Tim Worthington's FM sound board 100% identical in sound to the official FM sound unit?

Thanks! I am amassing a collection slowly and finding it an interesting experience since I never even knew the SMS existed when I was a kid.

submitted by /u/LunaticVoice
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