Do I buy a new car, or do I hop back into an E30? Help me decide...

[streetwaves]

Alright guys, so I know this might be a dumb question but here it is anyway.

The car before my last was an e30 318iS. By far, it is my favorite car out of all of the cars I've owned. I miss it like hell, but at the time that I sold it I'd had some pretty bad luck that I wasn't prepared for. I'm guessing the PO had overheated the car at some point, and the head was cracked. Unfortunately the early symptoms led to some expensive repairs that did nothing except for make me fed up with used cars. Finally, I decided to buy a new DD, which was a 2010 Golf.

Anyway, part of my problem was ever preparing for repair costs. I wasn't smart with my money, so any time something came up I'd have trouble getting the car fixed. I did many little things myself, but the more complicated stuff did me in. However, nowadays I'm used to putting away $300~ a month for a car payment, and more on top of that of course. I feel like I could just keep this up, and put this in my "e30 maintenance fund".

My Golf cost me about $3200 a year in payments, but maintenance was free, and of course it never broke down on me (although the e30 never did either). However, I'm thinking that if I were to really set out and try to find a remarkably clean e30 and get it inspected beforehand, that car probably would be hard pressed to cost me that same $3200 year after year in maintenance. I do plan on doing anything easy-to-slightly-harder-than-easy  myself, so that'll save some money. Plus, I am debating between an e30 and a more expensive car than my Golf. I can afford the new car, but if it's going to cost me $5000 a year and I might like an e30 just as much but it may only cost me $2000 a year, that sounds like something I should consider.

So what do you think? Am I totally wrong about the annual maintenance costs of a clean, "low" mileage e30? I do drive almost 20,000 miles a year but it's mostly highway. I'm literally willing to look for months for the perfect car, owned by some old retired pilot who kept meticulous records and maintained the hell out of the car.