I've tried about every polish recommended here except Prism and Mother's but I saw this Maas polish at the hardware store so I thought I'd try it. It's $5 for 2 oz. It seems like the easiest I've used so far to get good results. I had some headlights last year about as tarnished as the brass ball in the picture and I used 2 or 3 different polishes and it took hours to get them done. That little spot took 1 little dab and 30 seconds. I got the T polished but I don't ever worry about my bed, I just hang my cap there.
I can't tell the difference between Maas, Simichrome or Wenol.
I have used Maas for many years. It is great stuff. I find Simi chrome to be a little too aggressive, Wenol all is good also.
Maas has 4 letters and starts with an M
Simichrome has 10 letters and starts with an S
Wenol has 5 letters and starts with a W