For me, a definite YES.
I went from a flaky 1Mb connection to a steady 35Mb connection (nothing available in between the two).
My FTTC connection has been flaky for a few months, but still much better than ADSL. Hopefully an engineer's visit booked for Saturday will fix it again.
From what I can gather, most users enjoy perfectly steady & high speed connections.
I don't download large amounts, but when I do download anything, I want/need it quickly.
I could not work effectively from home via ADSL, but as my job allows it, I can now work really effectively from home (saving travelling time/expense) whenever it is convenient.
I don't really see much in the way of congestion (maybe I am lucky?) & ping times vary between 10ms & 26ms.
Finally, a number of family internet users can be online at the same time with very little effect upon each other's use.
Edited by Bald_Eagle1 (Wed 04-Apr-12 16:08:43)