Originally Posted by gwkiwi
If I were you I would do Lake Powell mainly due to its larger size and more anchoring and beaching opportunities but only in the summer and pray that some rain starts to fill the lakes.
Lake Powell is a great place, especially in spring or fall. It's too hot and crowded for our tastes much of the time in the summer, but April, May, September, October (before Memorial Day, after Labor Day) are mostly fabulous. You can catch a really windy day from time to time, in the spring more than the fall. We've cruised many of the big lakes in the west, and Powell is head and shoulders above most others on our list.
We particularly enjoy Lake Powell in a small boat, often spending weeks aboard, exploring places most houseboaters never see. Have done houseboats, but the small boat can explore everywhere, and get there reasonably quickly and economically. Lots of beautiful anchorages in the side canyons, with access to wonderful hiking.