Hey! There’s really nothing wrong with using .Touched these days. Just filter out bad events. If the hitbox is large, you can just listen out for say HumanoidRootPart changes 
If you really do need a 3rd Party solution there’s a lot out there from TouchedPlus to ZonePlus. These days I rely on Touched and the Spatial Query API. For context my module was made to have raycast speed on a spatial query. But it had lots of limitations (I only built it for my projects needs) and required a slightly more advanced user to understand how to dial it for their usecase*.
*and if it was right for their usecase.