mark 2 vs mark 4 blades

long story short i’m 43 and just bought myself a new pair of jackson skates with mark 2 blades. my previous pair i had since i was 13. also jackson’s, but they had mark 4 blades. i skated in these when i was a teen for about 3 years and i wasn’t great. the difference is the rocker. just wanted opinions/suggestions/personal experiences on if should get different skates with the mark 4. i haven’t really skated in years but i want to pick it up again.