Budget: Older Child, Graco

Britax FRONTIER 85 or Graco Nautilus ??

Hi moms, I just recently read a recall on my daughters carseat and apparently she isn't tall enough or weighs enough for her actual carseat. She is exactly 41 lbs and 37 inches tall. I have her in a Self secured Booster Seat with the seatbelt not harness. I am wanting to put her back into a 5 point harness after talking to my pediatrician and a few others moms they say its the best thing. So i WANTED to get you fellow mama's advice. Which one do you prefer and why? Is the Graco one good for 4 year old? Or will she out grow it soon...