2006 Hyundai Sonata or 2001 Audi A4?

My car was recently totaled so I have to get a new one. It was a 2003 Buick Lesabre limited that was loaded, it even had heads up display. I sadly couldn't find another within my price range that came even close to my car in luxury features. I have a budget of around $7800. I found two vehicles one was a 2001 Audi A4 1.8T for $5995 that was loaded and only had a cracked taillight cover (no big whoop, I see it as a bargaining chip). The cons of it were: 109,000 miles, no tint (a necessary when you have Leather in AZ), premium gas, synthetic oil and expensive replacement parts (not really that big an issue just may cause price of a warranty to go up). The sonata (priced $9,998 with 91,356 miles) I looked at also had it's ups and downs, positives: steering wheel volume controls, a digital Gauge that tells you how far you can go on a tank, cheap and few repairs, new body style and powerful but efficient v6. Cons: cloth seats, drivers seat adjustment may have been broken (didn't really try much to adjust it, raises my insurance, the alignment was off (It didn't pull it just went strait when the wheel was at a non significant angle, just another bargaining chip). I got insurance quotes saying the audi brings my insurance down by $45 a year and the sonata being newer raises it $96 a year (I don't pay for it mom does but I'd feel bad) and when buying it I'd have to get financing even after talking them down (not really a bad because I'm 18 wouldn't be a bad idea to start building credit, I have a good job and my mom's credit score is over 800 so cosigners wouldn't be a problem). I don't really like the thought of paying for premium gas or expensive repairs when it comes to the audi, but the sonata lacked my luxurious features that my buick had. I need a car that will last me a REALLY long time and not be a money pit. Which vehicle do you think I should go with? And why?