Buying a used car usually means you have to compromise. I've got TiAg. I like it a lot and it doesn't show the dirt.
Jet Black looks amazing...for about an hour after polishing it. If I had a garage queen it would be jet black.
But AW is just so dang clean and stays that way for a week (in dry weather). Plus I like the way white shows off a car's lines. Got to give my vote to AW.