Med training and kit

[RonMexico]

I have taken a TCCC course, Basic CPR cert, and a TCCC live tissue course 4 years ago, as well as I am currently doing pre-med classes to give myself the leg up on the competition during a 11 month accelerated med program this coming up summer.

I have training, advanced and basic med kits that consist of enough supplies and meds for several families members but I don't own expensive gear- ie AED, C spine boards, emergency airway intubation kits .

I have never worked in a mass causality center or in a natural disaster area so what basics med gear/prep can you never have enough of? Is it worth buying expensive medical equipment like an AED?