My favorite mod is probably the vv by dovpo. It is variable voltage only, doesn't have onboard charging, isn't upgradeable, and just works every time. It's also built like a brick xxxhouse. Bolt v3 is my favorite mech squonker. For toppers it's a little more difficult but I think my favorite rta is either the hurricane 1.3 or the Aqua 2. My favorite dripper is one that I just got a couple of days ago, the Citadel by Psyclone Mods. Before that, my favorite was probably the Nyx. My list of honorable mentions is pretty long though.