I have not used either set but if you're looking for stopping power you will get a significant improvement with the RSi2's based on specs and a quick forum search for comments on this iron set.
This set also happens to match the meter speed of your RocketBladez, which for me is a big factor in upgrading my clubs and the only reason I did not upgrade to the RSi2's. So for you this should be a relatively easy transition while benefiting from the extra distance and forgiveness.
Ultimately I would recommend renting the set and reach your own conclusions for less than the price of the sleeve of balls that you are using.
On a side note your fairway wood meter speed is kind of mismatched to the rest of the clubs in your bag, so it might be messing with your timing a bit.
-Keith