Which is Better Portable Oil Heaters or Space Heaters?

Just wondering which one warms a room more?

I have one that has oil inside and it’s a medium sized movable radiator with wheels

It does warm the room up but as soon as you turn it off the room instantly is so cold during winter season!

Will be using it when temperatures drop even more, it will be on just as I’m having a shower so it won’t be cold when I put body cream on lol

One annoying thing is cause of the dry air I get nose bleeds! Did a search and I will try placing a bowl of water in the room to restore the moisture level but don’t want to accidentally knock it over haha!