I recently purchased this 2008 Avalon XL and I have been very satisfied with it. This vehicle accelerates and handles adequately despite this being a mid-large size sedan. I'm also very surprised but equally impressed with the overall fuel mileage that this vehicle is getting (avg. 29 mpg). The interior cabin is very quiet and is there's plenty of room for up to five people to sit comfortably.
Great gas mileage, spacious cabin, pleasing exterior and very reliable.
The dislikes would be the way the cup holders are positioned (top one is actually angled downward). Another dislike is the way the one touch drivers/passenger windows sometime operate. There is an anti-catch system in place but it sometimes works when it's not necessary (window goes back down).