I've got a Lee 100mm filter system, which I have a full set of hard and soft ND grads, and a 3 stop ND. I'm looking at getting some coloured filters (red, yellow, green, blue) so thought I'd probably pick up some Lee filters again. The reason I went for Lee filters in the first place was the colour cast Cokin and Hitech ND filters have, where as Lee do not (or not very much at all).
I'm wondering if the Cokin or Hitech coloured filters don't have so much of a colour cast, so I could pick a few up and save a few $$s. Does anyone have any experience with these other filters or should I continue with my "you buy cheap, you buy twice" philosophy?