would or should

"Should" is a bit more formal, Tang

Thank you.

Use 'should'.

Use 'should' for a real expectation; use 'would' for an unlikely or unreal conditional:

I have not seen my younger brother for ten years. I think he should be taller than me now.

My younger brother did not buy Microsoft shares when he had the chance. If he had, I think he would be rich by now.

Thanks, contrex.