@bcrypt depends on what role you expect to play in a disaster, which also depends on which disasters you expect.
Shelter in place/evacuee? A regular radio with weather radio functions.
Not involved in the rescue, but you want to check in on friends/family? Maybe a CB or FRS radio.
Need to coordinate with people far outside the affected area? HF/MF rig
Directing search and rescue (SAR) teams? VHF/UHF rig.
On an SAR team? VHF/UHF handheld.
@bcrypt more often than not, your antenna size and placement is the biggest factor.
You might want alternate power if you think the grid might go down. Handhelds and in-car rigs don't usually suffer from this, but base stations often do.
In big disasters these might not work so well. During the TX blackouts I heard reports that ≈every bit of spectrum was busy.