English language ....

In my opinion, it is a fair deal or
I think that it is a fair deal

I think is usually used in verbal expression
In my opinion is ofter used in written expression.

唔係唔可以（把口o係你度），但係架牀疊屋，意思重覆。In my opinion 已經係「我o既意見」，I think 又係「我認為」，太多餘。
如果我話 At the bottom of the page I have written my comment after the final line. 我只係重覆左頁底有個評語，我只要 At the bottom of the page / after the final line 其中一個，都講明左位置啦，唔好咁長氣。

2007-06-23 19:34:33 補充：
咁又唔係邏輯問題。第二次都冇否定到第一次o既意思。講兩次唔代表頭腦唔清晰，只係唔得簡潔。