We booked the 2.5 hour tour. Our guide (Amory) was great. He was very friendly and shared many anecdotes that made the experience special. He kindly took many great photos so we won't ever forget it! It can be hard to pick a tour out of so many providers, and I was glad to know that this company is owned by someone who actually lives in the valley. We didn't do much research before coming (except to know we wouldn't make it through with my little car), so I didn't realize there are shops within Monument Valley (past the visitor center). We didn't have our wallets and I really wanted to buy something - so bring your wallet just in case you find a perfect gift!