Hi. I have bought the old consoles i use to have and enjoy, megadrive 1,master system 2 and the snes. They all have original cables and i have managed to get them connected to my tv as it has manual tune but my question is whats the best way to get the best picture out of the consoles.

At the moment
Snes is scart to back of 50" samsung plasma
Megadrive is scart to back of tv
Master system2 is rf to back of tv antenna input.

My idea was to have all consoles go into a splitter box then have rgb out of splittet box to the back of my tv/amp?

just wondering what you would suggest is the best way to connect the above consoles to a new tv?

also the master system 2 , does any cable exist for this ie rf to scart...

Thanks