We have one and love it. We don't have the problems that other people talk about concerning the take up reel. I don't know anything about custom profiling so I just use the ones built in to ColorBurst and everything comes out looking great!
I can't tell you "everything you need to know". Might should've asked that (albeit more specifically) before you bought it. I hope you love it as much as I do!
Id strongly suggest The Hp Latex or Jv33 over the Gs6000