There are some advantages and disadvantages to using an entity. First of all an entity compile faster and works the same as a non-entity but not a model(can't have animations like a model can). In a lit room or area it is obvious that it is an entity unless you go into the object properties by right-clicking on the entity and setting ambient to 100. Even this doesn't entirely fix that just so you know. Hope this helped you in any way. Feel free to PM me if you have any other questions and I'll try to answer them when I get the chance.