I have the regular and like it alot. Only difference that I could see is that the "brushed" lining may be a tad warmer if it is directly against your skin, but that would not be too likley while ice fishing. Also I have heard from some that the new lining makes it very hard if not impossible to pull the bibs on/off with your boots on (which is how I do it while standing in a cold, icy,slushy parking lot, LOL)
Other than that those are the only advantages/disadvantages that I can think of or have heard of. Plus I really like the red color of the original suit incase of a rescue situation on the ice/water or at night.
J-