As I looked in the forum via Search and did not find that much up to date information about buying a computer in Switzerland, I thought I would provide some info on my current experience.
I am looking for a fairly specific high spec computer for my business.
I went to a STEG store and they recommended contacting their Luzern headquarters for help as they were the experts
http://www.steg-electronics.ch/de/Default.aspx
The good - they responded quickly with two quotes.
The bad - they did not read my requirements and sent quotes for inappropriate machines. I have talked to them twice since then asking them to provide a quote that matches my specs. Alas, radio silence since, and I get the distinct impression that the person I am in contact with does not really know what he is talking about. Overall disappointing.
Next up was Brack http://www.brack.ch/
It took longer for them to respond - but they appear to have provided a quote that meets my requirements. Alas, I have called and sent questions to the salesperson and they have not responded. I will try them once more, but one would expect a bit more service when one is expecting to spend 4,000 chf
My best experience so far was at Digitec https://www.digitec.ch/en
It is difficult to park there and you may have to wait a while, but the guy that helped me was VERY patient and knowledgeable. We reviewed all of my requirements and he cam up with a suitable proposal.
While I would really like to have three comparable quotes to make sure I am buying the right machine, as it is a substantial investment, for now https://www.digitec.ch/en is the clear leader in terms of responsiveness and customer service. Maybe that was because I was there directly - but I tried that approach with STEG and they referred me to their headquarters.
No purchase yet - but just wanted to provide some info on my experience, as there seemed to be very little recent commentary on purchasing computers here in Zurichh.
Hope this helps some people that are searching for info.
-D