Looking on the internet deeply has found these results:

i want to say is the most popular phrase on the web.

i have to say 1348,000,000 results on the web	i want to say 1421,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Certainly, a superior product, suitable to who is looking for the best and isn't interested to the price, that is excessive for normal people, i have to say. L. It's been nice, it's been really great, i have to say i'm really... The Dwell knob adjusts the number of the harmonics and, i have to say, it works well. I have to say that because Venice needs you. I have to say, that looks modern. Sounds strange to me if it happens once ok, i have to say, and please don't get upset with me just concerned! I have to say that I've underestimated you. I have to say it's very interesting.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

i have to say

1348,000,000 results on the web

i want to say

1421,000,000 results on the web

More popular!

Certainly, a superior product, suitable to who is looking for the best and isn't interested to the price, that is excessive for normal people, i have to say.
L. It's been nice, it's been really great, i have to say i'm really...
The Dwell knob adjusts the number of the harmonics and, i have to say, it works well.
I have to say that because Venice needs you.
I have to say, that looks modern.
Sounds strange to me if it happens once ok, i have to say, and please don't get upset with me just concerned!
I have to say that I've underestimated you.
I have to say it's very interesting.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.