When I bought my 02 Avy I thought about getting the 8.1, but at the time I only had a popup, and the 5.3 got bad enough MPG.
My Avy will be 13 years old in a couple weeks, and it has been a solid vehicle. Yes, things are starting to break, but that's to be expected. The engine and drivertrain have had ZERO problems.
The 8.1 is a total beast - you can tow a lot more than the TT mentioned.
I am also ticked that Chevy decided to bag the Avy. When this one dies, I will have to find a used Avy or get a Silverado instead, but I won't be as happy.... :(
The versatility of the Avy is unsurpassed. I have used it hundreds of times to pick up or move everything such as building supplies, pools, BBQ grills, appliances, firewood, furniture, etc. It's probably saved me thousands in delivery charges and was invaluable in moving family members and friends.
The lockable compartments on the sides really come in handy, especially when camping.