I am currently studying computer science at King's (first year).
Overall I am very happy with my choice; our lecturers are all highly accomplished in their areas and provide interesting and relevant modules. In addition to this, people regard a King's degree rather highly, in fact, ignore the UK league tables completely and look at The Times Higher/QS world rankings, as you will see that King's is ranked around 21st/36th (from memory) respectively. These league tables take into account research power and excellence, funding and international outlook etc. - which in my opinion is far more important that student satisfaction.
That being said, the course is not perfect. There was a failure in the IT system at the beginning of the year which left KEATS (the e-learning platform) partially unavailable, as well as timetable and library services completely down, this was a huge pain. The online software that marks our programming coursework has also had various problems so far.
I have heard numerous complaints from many of the people on my course, but in my personal opinion - like any university, the experience is what you make of it.