Here's the color chart, though I'm not sure it's looking right on with my computer:
I have a medium bottle of Super Red, but I want to try coloring my cookie dough so I will probably order more.
I use Super Red, but mainly because I won 7 bottles of it in a raffle basket last year. I have had great success using Super Black, so I'm assuming that the red would be good too.
Nicholas Lodge used Red Red in our gumpaste class at Cake Camp, so I picked some of that up as well.
I use Super Red all the time.
I haven't tried any other than Super Red, but I use it all the time and love it