I need to purchase a new UPS and I'm hoping someone can steer me in the right direction?

My UPS has finally kicked the bucket and I started to research different ones. My question is a two parter. I don’t really suffer from power surges or power outages however as I research someone mentioned about downsurges, and how some UPS don’t handle that.

One, is it necessary to protect my computer from a downsurge?

Two is and UPS really necessary to protect my computer or do I just need a good surge protector since I don’t live in an area of power outages?