I never played the Jak & Daxter games. I'm assuming they're good?
DMC is one of my all time favorite series. I have the HD collection too. I passed DMC1 over the weekend and I'm working my way through DMC2.
Likewise, the Ratchet & Clank series is one of my all time favorites (my first platinum was Ratchet & Clank : A Crack in time [tear]). If you love platformers in the vein of Super Mario 64 or Gex, you'll love it. Insomniac Games' pedigree is the sly humor and insane weaponry. I think you'll like it.
Not impressed as in it didn't meet your expectations, or it's not a vast improvement over part 1 ? Can you elaborate a bit ?