or 
Strings are one of the important elements of structuring sounds.
It is difficult to find satisfying strings and features adapted to each instrument.
Some strings have power(volume) but not a good balance.
Others have good balance but low tension.
It is hard to fine a product that gives total satisfaction.
Though buying and trying strings many times, they were always inadequate! (many customers may have felt the same way).
Also the length of these strings are long enough to be cut into two – giving you two sets for the price of one
