Blenders

So for a while now I’ve been wanting to buy either a Vitamix or a Ninja blender. But my husband keeps telling me it’s pointless to buy a new one since I already have 2 blenders at home. The 2 I have are cheap. One is a small Hamilton beach smoothie blender and the other his a big glass Oster one that was just a hand me down from a family member. Would it be crazy of me to buy a new fancy one? Does anyone have either the Vitamix or the Ninja? What do you like about them? Are they worth it?