What I would say to Sharp in response to his tirades against Logitech systems is that most reasonable people would take the view that what really matters is not what things were originally designed for but whether they do the job that YOU want them to do.
I have more powerful amps and speakers which I have used in the past but for the last six months or so have used the Z2200's on all but one gig and like so many others on this forum have had nothing but positive comments from my audiences and most importantly the people who pay me.
AND, I don't work for Logitech nor, I am sure, do any other of the forum members who have found the Z2200 and other similar systems a joy to use.I would only add that a mixer is really needed to get the best results. I use an Alesis. I would just conclude by saying that anyone who spends silly sums of money to buy something for it's name when much less expensive kit will do the job just as well must have more money than sense.
Happy new year everyone
Trevor