Difference between Until Now and So Far

UNTIL NOW vs SO FAR: ADVERB

Used in negative statement to describe a situation that has existed up to this point or up to the present time

Until now; previously; yet.
Used after a superlative
Used in negative statement to describe a situation that has existed up to this point or up to the present time

On purpose, Speak for, Speak to, All along, Young man, And how, But then, Up to now, Til now, As yet, Yet, Hitherto, Heretofore, So far, Thus far

In fact, Sort of, Look to, Come to, Close to, Because of, Early on, As yet, Up to now, Til now, Hitherto, Heretofore, Yet, Until now, Thus far

Call on, With that, Take to, End up, Cope with, Early on, Fall for, Talk about, On purpose, Speak to, And how, As yet, Yet, Hitherto, Heretofore

Get to, Come back, Get into, And how, In fact, Sort of, Look to, Come to, Close to, Because of, Early on, As yet, Hitherto, Heretofore, Yet

From ancient Greek times until now, this message has survived, and we now bring it to you in our Molon Labe Spartan Helm stencil.
Toyota are now unquestioned, Poppendieck provides a more solid foundation and gives greater credibility to agile methodologies that have until now remained controversial.
Until now my customers have been Australian, but I now have a potential client back home in USA.
Until now, local clinics have had to wait until the week prior to find out how many doses the state would send.
African republics, asserting that until now up to now, thirteen thousand men have landed in provincial ports.
Until now, the state has refused to do this until an apostasy order is granted from the Sharia court.
Now, um, Up until now we have dealt with two things that are very controversial.
However, whereas Concerta revenues have until now only been a possibility, now they are guaranteed.
Everything until now has been introduction; now comes the essential message.
Tagle until now Bishop of Imus, now transferre.

Everything seems to be working great, so far so good.
So far, so good for the mortgage lender.
So here is what I know so far.
Male hormonal contraception: so near and yet so far.
So let me recap where I am so far.
As far as I understand it we have got no priority at all so far.
So game is still fun on Switch as has been so clear from the reviews released so far.
So far my friends read Legend off my list and they all have loved it so far!
Helped so far so far so, and you are the message.
Rather stunned, very far away fro myself, not really believing you are now so far, so far, you so near.