The Chronic was changed last year. The 18/19 and 19/20 skis are the same. The older version was 90mm underfoot, mostly camber and a traditional shape. The new one has been fattened up to 95, with more rocker and a decent amount of taper. Read the Newschoolers Roofbox review, but Twig says its more of an all-mountain ski now, compared to the old one which was dedicated to park riding.
The Prodigy 1.0 is stiffer than the Chronic, which makes it a lot more capable all over the mountain. It's not super stiff, it's still fun but the Chronic is real soft now (not quite Blend soft though). What size are you looking at and what is your heigh/weight/age/preferred skiing location?