I have a Mediator 1200 + Voodoo 3.
Some of the Pros:
Higher resolutions (upto 1600x1200 and higher).
8, 16, 24 an 32-bit color.
Faster screen updates than AGA.
No flickery interlace.
16MB grahpics ram.
Chipram is left free for aother purposes.
3D hardware rendering.
The only con I can think of is having to use two monitors. I solved
this buy buying a scandoubler and monitor switcher.
I'd recomend a scandoubler without a flicker fixer because you'll have
a flicker free graphics card for all your apps.
I currently run Workbench in 1024x768x16 @ 91Hz and never look back.
I'll leave to someone else to sort out the benchmarks.