). They also are quite pricey 
Other than that I see no beneficial difference. 
Sensitivity is great with tungsten. Smaller size make flipping in cover easier. Since lead is illegal and tin/bismuth is pricey since its every bait makers alternative. The prices arent that different. There are a lot of situations where it might not need to be that sensitive but in 30+ foot you can still feel every rock, limb, grass
