Spark plug question: Massive electrode or fine wire?

Google shows that this question last appeared here in 2001. Therefore, I
wanted to pose it again in the event there might be more anecdotal data
since then.

Are there benefits to replacing massive electrode spark plugs with fine
wire spark plugs?

Background: I have a turbo-normalized IO-520 in the Bonanza that runs lean
of peak at cruise, an operation recommended by the turbo system's
manufacturer, Tornado Alley. This type of operation requires absolutely
clean spark plugs and a well-maintained ignition system, otherwise engine
roughness will occur.

Since the TA Turbo was installed, both the previous owner and I have had
the massive electrode spark plugs cleaned, gapped, and rotated every 100
hours. However, after reading the 2003 Aviation Consumer article I am now
wondering if I would be better served by installing fine wire spark plugs.

Given the large cost difference between the two types of plugs, I am
interested in reading others' experiences.

--
Peter