Squiffy, while i generally agree with you, i think a lot of its down to expectations.
My dad would be thrilled with a £100 all in one pack 5.1 setup for movies, while i wouldn't be happy with it.
Music would REALLY show how horrible it is, but my dad again has a £350 technics stereo system, which he thinks is the dogs, its not bad, but it cant touch my seperates setup, which isnt the best tbh (Arcam Alpha 7, FLAC on HTPC, Celestion impact 10 speakers).
So long as they dont expect it to be awesome, and just want it to do the job, it'll be fine.
Not everyone would want to spend £1k + on a setup, and not everybody expects it to be great.
Some people are happy with a lot of bass, directional sound and to be able to watch a film...
Just food for thought, as you do tend to overspec the simplest of requests, not everybody wants to spend a lot, and not everybody demands the best
