Adjustable dumbbells vs Weighted Vest

[BldyKnuckles89]

Just lookin for a little insight here...

I've been contemplating about getting either a pair of 50 lb adjustable dumbbells (NOT Bowflex) or a 40 lb weighted vest. The dumbbells would cost around $140 for a pair, and the vest would cost around $70. I understand that a vest is pretty much strictly bodyweight/movement based exercises, whereas the dumbbells can be used for more "isolated" exercises, like tricep extensions and the like. I realized if I went with the dumbbells I could just use an old backpack if I wanted to do weighted pull-ups, push-ups, etc. I'd like to know any thoughts on this if anyone has any. Any help would be greatly appreciated!