Not that anyone on here ever expresses an opinion despite a lack of knowledge, but the major difference between a Ralliart and a base Lancer is the motor, stiffer shocks and springs, front STB, and thicker rear sway bar.
The Ralliart has a 2.4L MIVEC I4 that puts out 160 horse at the crank. No not the fastest car ever, but not ball punchingly slow like the base Lancer.
Opinions on cars on here tend to absolutely blow because nobody gives a shit about who’s asking, they just chant for the coolest car.
That being said, and now knowing your budget, an $8k Audi is probably going to be a problem child. You have explained that you’re a father looking for fun family transportation, so your money will really be better spent elsewhere.
While a Ralliart may not be as bad as some of the forum parrots on here are chirping, there are probably better combinations of fun and reliable to be had with your $8k.
Despite that, here’s some decent info on the Ralliart.
http://autos.msn.com/research/vip/Spec_Glance.aspx?year=2004&make=Mitsubishi&model=Lancer&trimid=-1
If you’re worried about safety, check iihs.org and safercars.gov and you’ll see that the Lancer without side airbags did poorly in side crash tests.
More Ralliart info:
http://www.modernracer.com/history/mitsubishilancerralliarthistory.html
An $8k WRX is probably going to be north of 100k miles. I’d look for a 2.5RS. One less turbo to blow, you don’t have to buy premium or worry about detonation if your wife fills the car with 87 octane, slightly better gas mileage, likely lower insurance, etc.
How about Mazda Protege’s? My wife has an 03 that she bought new. It’s got 60k miles now without a single problem (aside from brakes seizing because it never really got washed.) They handle awesome and get 30+ mpg highway. Plus they’re way underrated cars so $8k would net you a very clean one.
Good luck with your shopping.