Colorado Rafting Advice?

Sorry if this is a repeat question (new here)

Anyone have thoughts to share on the best places to raft in Colorado? Going out on a honeymoon trip in May to enjoy some experiences outdoors, and rafting is something that we’d really like to make happen. Particularly given that May is when the season begins its peak (from what I’ve read). Although we’ll be there mid May as opposed to late May which seems like it could make a difference?

Each of us has only been once when we were kids, so, we’re by no means experienced. But we’re also somewhat thrill seekers in the sense that we’re looking for more than entry level rapids.

I’ll also add - we will be going to an outfitter, not going with our own equipment.

Hope to hear some good thoughts/advice!