S-video out: http://arakon.dyndns.org/Gen1svideo.html
Throw away that stupid RF switch.
60 Hz Switch: http://home.freeuk.net/markk/Consoles/SMS_50-60Hz_Switch.txt
At last play your pal games at the speed they were made for.
I personally haven't tried these yet (maybe this weekend?). But- I just picked up two SMS2's at the fortnightly Brighton car boot sale. There's always this one guy with an amazing amount of retro game stuff... where does he get it all from? This one time, he had a collection of 65 master system games as a set, almost all boxed- there ARE only roughly 360 games for the damn thing! And there were some classics in there, too...