I know there are already many posts on still and yet, but I really find it difficult to use them as conjunction as in following sentences:
- It's a small car, yet/still it's surprisingly spacious
- He has a good job, and yet/still he never seems to have any money
- The weather was cold and wet. yet/still, we had a great time.
So my question is when should I use yet and when should I use still, when using it as a conjunction, and what is the correct option for sentences above?