I've read about 3 pages of replies most of which bash the AOW course so let me say this...
Fact: OW is good to 130ft
Now let me say this....
AOW is not designed for a person with 100 dives. AOW is designed around a diver with less than 30 dives to give them a couple of things (at least with NAUI).
SAC
Navigation
Night Dive
Better Bouancy
Intro to Wreck (geographic need-Northeast diving)
Hunting/Collecting
Search Patterns
Liftbags
Reels
AOW is different, or it should be, depending on where you dive. I dive in the Northeast and I can tell you that most of the AOW courses in my area, including PADI courses, have a lot to offer for a diver who wants more than simple warm water diving with 100' vis and perhaps only wearing a lightwieght wetsuit.
Now the fact that a basic OW cert is good to 130ft according to standards doesn't conflict with this standard either: You should never dive beyond your training.
Diving in the US is a lot different than diving out of the country. There are countless expamples of lawsuits LOST by dive shops and dive boats because they allowed someone to dive beyond their training...not their certification...their training. OW is trained to 60'.
I did read one post that hit the mark that talked about air consupmtion and getting narced which are all real concerns the deeper you go and for a newer diver it could be deadly if they don't take these things into consideration. Has it happened? Maybe 1 out of 10,000 get narced at 100' but it will happen and has; that's why dive boat operators do a CYA and require you, me and everyone else to show proof of training to a certain depth, which AOW and Deep diver gives you.
I personally believe the AOW course that our students go thru is worht it and provides them with valuable skills early in their diviing that can and does prevent future problems, especially where we dive...the Northeast.
Now if you've dove a couple hundred times with only a Basic OW cert and you've got some good dive buddies/dive mentors you look up to, given you good free advice, you learned by watching the DM/Instrutors on all the boats and asked lot's of questions then that just means you're a good diver and that's the way it should be.
It's also true that if you want to continue you're advancement into leadership roles you need it, regardless of how many dives you have, so bite the bullet and go do it. It will just be easy for you that's all.