Should i go to moab or zion?

its mud season now, im bored, and unemployed. i need to go do something cheep so i figure ill go camping. i have no gear so it would be out of my car, but i would want to mountain bike, fly fish, and hike (im not a serious biker, just like to ride around on the mountains). which one should i go to? zion is about 6 hours away moab about 5 so the distance isnt an issue. i havnt been to either so both would be a great experience. i would also be bringing my 80lb dog so the hikes would have to be easy enough for her, she is a great hiker and can do some medium to tough trails. but i am big into photography so i would love some breath taking views i could get photos of.