This is always a good talking point..
My personal view and having interviewed near on 300 people in my years of recruitment i have read every CV from some with 50 words to some as long as the bible.

It is all relative about what role you are going for..
for example my CV is 4 pages....and this is purely as i have had some large jobs and all the details about the job would be relevant and needed to be on there for any employer to read as it included achievements, sales figures etyc etc.....
but then i would interview a technician and could have 5-8 lines for each job and that would be fine lol

so back to my original point..it is all relevant to the company and the role you are going for