"Can anyone post some examples of a good "eye popping" 16b English SLE in this price range? I'd appreciate it if you could."

That is the issue, real good 12 bores are in the 12K+ range, small bores command a premium. I know this gun, figure this as a starting price point for a good quality small bore SLE

http://www.schwandtclassicarms.com/Cashmore%2016%20063.jpg

it is at schwandt arms


http://www.bertramandco.com/
Booking African hunts, firearms import services

Here for the meltdowns