#1
I'm intrested in upgrading my broken speaker in my valveking to either a Vintage 30 or G12K-100.. I play black/death metal (use a dist pedal) and class rock/thrash on the OD channel..

I tend to use alot of drop tunings also.

which would suit me better?
#2
If you have the 50 watt VK 112 then I suggest the higher wattage G12K-100. The extra headroom for the music you play will help your gain and tone sound clear at high volumes.
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#4
The Vin 30 would be just fine in your 50 watt 112. Its the stock speaker in my 50 watt 112 Traynor.

I think you need to try them out. This is one where there is no right or wrong answer... its up to YOUR ears.

FWIW I love my vintage 30, but everyone is going to have a different opinion