I used Humbrol paints for all of my surface work on my build except for the silver layer.The reason I
went with Non-Buff Aluminum was that most of the silver paints that I tested (and I tested a lot) did not
hold up and lost their reflective quality when sealer went over them. My best result was with Model Master
Non -Buffing Sealer over Non- Buff Aluminum. In fact I ended up using that sealer over my entire paint job
and it worked exceptionally well ,even with multiple coats. More on the first page of my thread-The Builders ESB Build.
Hope this helps, have fun painting,I think it's the best part.