Welcome BimmerNoob!
I have an e36 325i that I have had for 8 years and 200k miles (car now has 298k). I also had an e30 318i and e30 325e. I had an Acura Integra for about 4 weeks in 1998, but missed my first e30 so bad I bought another and sold the Acura. All together, in 15 years of driving, that was my only car that wasn't a BMW.
Love the photos of the cars you have. Not personally digging the wheels on the e30, but clean and great looking car never the less.
I think I had a post in one of the threads MD posted, but here is a direct link;
http://www.xoutpost.com/bmw-sav-foru...ight-lens.html
Once again, I agree with MD that it depends on whether it is haze on the outside of the lens or fog on the inside. If it is indeed haze on the outside, take a look at the product I used. It is holding up pretty well so far. You can see my before and after photos in the above link. Good luck either way.