I have installed video conferencing equipment for firms for years. There is not really much difference between all of the different brands, I just fit what the company want and get on with it. Lately I have been noticing that more and more people are buying Avaya partner ACS and so it makes me think that this must be a really great system. It is pretty easy to fit and when I test it seems easy to use along with the Avaya IP Office phones. I guess that I am not the best judge as all I do is fit and test them but I do assume that if lots of people are ordering them, then they must have had some good reviews and must be a reasonable price. I also think that if the system is easy for me to test then it must be easy for people to use. I suppose I am used to this sort of system and so you may think that I might not be the best judge of ease of use but actually you would be surprised how different they all are and how tricky some of them can be to use. This one, to me, seems to be pretty straightforward which is great for a business as it means that they do not have to spend time teaching their staff how to use the systems, well not too long anyway. I am sure that even a beginner could get a grasp of this one pretty quickly.