The expediency of fast internet at home

While reading the comments on the habra questioning What is the speed of your Internet access? , my empty head managed to visit a few thoughts.
Having tried the tariffs from 1 Mbit / $ 20 to 75 Mbit / $ 13, I analyzed the volumes of the generated traffic and came to the conclusion that 5-10 Mbit are most balanced (at prices up to $ 10 per month, of course).
The facts for which analyzed:
1. Infrequently (20-30% of downloads) a sufficient number of siders is recruited, for the disposal of the channel more than 8 Mbit. Only on very popular distributions.
2. Sites like softpedia.com, sourceforge.net, filehippo.com, which host the main or additional mirrors from software developers, also often cannot give files at a speed much higher than 8 Mbps.
3. On 8 and 75 megabits, videos on YouTube are loaded with a minor difference in time.
The question of economy has disappeared, because of the comment about the imaginary economy of Mr mezya and advice from utya , although I am a dependent student, for the time being
The opinion of habrovchan is interesting now about this:
What speed advise friends and relatives from the available table?

Speed:	2 mbps	10 mbps	30 mbps	80 mbps
Price:	55 UAH / month	70 UAH / month	90 UAH / month	140 UAH / month