Help please: What’s wrong getting a BA over an AU?

[Uncle_Ken]

Who would have thought finding a car would be so hard. I have been looking for another AU for the past month and a half with no luck. The closest I have come was TMans AU (2 many ks to convince my wife and wrong colour). I saw a very nice Fairmont (a 6, full Tickford gear low ks but the price was 2 high for me).
Seen lots o AU's (Fairmont’s, XR6&8s and even Fairlanes in VIC but nothing I liked in NSW. Bugger...

BUT I have seen more BA's in the sub $6000 range than I thought I would (varying types of course). So now I have a problem.
My wife likes the look of BA's more than AU's (Yes I now its grounds for divorce in some countries) for a couple of reasons. 1. They are younger and will should get a higher trade in in 4 years’ time. 2. They on average have less K’s on the clock. 3. They seem to be in better condition.
So my questions is:
What’s wrong getting a BA over an AU?
I know AU3XR6 has thought about this and has decided to stay with his AU’s. But he has an AU and now I don’t.
Now my wife has made it clear I CAN GET AN AU. She just thinks a BA is a better option.
What do you guys think? So again What’s wrong getting a BA over an AU?

UK