Backpacking the Grand Canyon

For those who have done it, what did you think? Hubby and I rafted down the river last year and while it was fun to go through class 5 (grand canyon calls them class 10) rapids, I loved the hiking more. I was doing some research and saw a Rim-to-Rim (what kind of guy doesn't like going to the rim?) Backpacking Trip that typically lasts 5-8 days and is difficult. Looking for advice on if the rim-to-rim is fun, or if I should stick with north/south rim only. I'm looking for difficult hiking/backpacking trips. And if you did it, did you use a tour group and if so, which one?

WTB Hiking =O

When we rafted, I'm pretty sure we visited all of those areas as each day, there was about an hour or so hiking (one day involved 2-3 hours of hiking). We went in July which was perfect as it was nice and toasty during the day, rained a little, but we had no mosquitos which seems to be a problem in the first and second quarter. The areas we did visit though while hiking was absolutely beautiful and I want to do the hiking a full trip.

I'll check out those areas though just to make sure.

It might've been on this day that's Havapusai. Unfortunately, waterfalls and all that became the norm, haha. I do recommend people going into the Grand Canyon for a few days, hiking or rafting.

Still thinking rim-to-rim.

That's what I am talking about. Thanks for the link.

edit: Been doing some research and it looks like a R2R or R2R2R would be something I may be doing in one day. No camping. Runners do it in 11 hours (fuck that). Looks like you don't even need permits to do a day/night hike. Only thing I would be worried about are snakes, lol.