I think she is / In my opinion she is / I believe her to be the greatest living blues singer.
To my mind / In my opinion / As I see it, further legislation is not the answer.
(Personally) I find / I reckon / I have the impression that young people are generally politer nowadays.
I feel we are being pushed into accepting the deal.
My view (of the matter) / My opinion is that women are still underprivileged.
My feelings / thoughts on the matter are evidently of no importance to you.
His reaction to the proposal was quite unexpected.
He sees the future of the company as lying in food manufacturing.
What is your opinion on this / your view of the matter?
I share your opinion / point of view. / I agree entirely with what you say.
We are in complete / partial / broad agreement / thinking on the same lines.
The results of the investigation do not agree with / are not consistent with / do not bear out / do not corroborate your claims.
I completely disagree / cannot agree at all with your view / with what you say. / I cannot accept your view / what you say.
We must agree to differ on this.