This mod is an expansion for Warptorio 2. DON'T PANIC! Adds missions on the planets you visit, required to unlock technologies. Also adds some big Bosses, more planets, and a loyal robotic companion.
Special Furnance is useless because no have slot for modules. Moreover, it is not affected by warp beacon productivity modules.
My choise is vanila furnance, because +50% (2x25) productivity +100%...250% peoductivity from warp beacon is more important than speed.
In fact, this oven turned out to be a cheat.
It is not clear why, but this furnace receives a 2000% productivity bonus from 10 warp modules. Although it should be 100%. And the productivity bonus grows even from speed modules.