Fixed blades with a minimum head weight of 100 grains. You may want to even think about 125's. The only mechanical I would consider is the one I just bought. The Trophy Ridge Undertaker looses no speed or penetration over slick tricks. I've shot both in the same media and the Undertaker actually out penetrated the Slicks. I added 20 grains of weight to the Undertakers to get them close to 125 gr.

The lighter setups shouldn't use lighter tips unless you are only shooting at targets and looking for maximum speed.