There are some difference between the two models. If you look at the online photos of the two models the kitchen area is different between the two. There is a window over the stove on the 34IK. Per the specifications between the two the 34RL2 has more carrying capacity, the awning is 2 feet shorter and the length is slightly longer by 4". These are just a few of the the things that I see right away.
2016 34RL CC; 2008 Ram Mega Cab 2500HD, 6.7L, 68RFE 6 speed, 4X4, Smarty S67, TDR 135K+miles