Usually, if a company uses quotes like that to sell its product, the company also gives some sort of indication of where the quotes came from.
It probably wouldn't be all that big of a deal if these quotes were on a separate web page, tucked away deeper inside the site. But if you're going to use quotes like that on the home page of your web site, I think you should at least say where the quotes came from.
For instance, I'd like to know who said:
and"It's as if Porshe and Mercedes got together and built a PC"
"If it's reliable enough for hospitals, it's reliable enough for me."