Beatmakers should have VARIETY and QUALITY when selecting plugins and drum kits. Having too many plugins is expensive and is bad for long-term compatibility of projects.
Mixing kick drums and 808s for the best sound requires wise sound selection (short-tailed kicks), and often sidechain compression to reduce volume automatically, and avoid low-end frequency clashing.
A VST, known as an audio plugin, can be a digital instrument (VSTi), or an effect (VST) like delay, reverb, or equalization. There are different VST versions like VST2 and VST3.