Both Nuna Aace and Clek Oobr are excellent in reclining and offering a comfy ride for the little passengers. However, the Nuna Aace would be a clear winner if you want plush padding and a bigger weight limit so your child can ride in their booster longer. Clek Oobr is great if you have a smaller vehicle and are looking for a compact high back booster with an excellent safety protection system.