Red fluors

Hi flowers-
 
I'm curious to see results from people's efforts to accommodate more
than 3 fluors simultaneously excited by a 633/635/647 laser.
 
I know people are using 592ish to add Texas Red to their red path, but I
want to know if there has been any success with some of the "odd"
AlexaFluor dyes, i.e. Alexa660 or Alexa700, using the red laser.
 
Thanks.
 
Andrew