The answer to this question is purely a matter of opinion since Xerox and OKI are direct competitors. Some will say one is better and some will say the other is better.
Both companies offer a variety of products and some are more suitable for one application than another. That suitability must be assessed along with cost to decide which is better for a particular customer at a particular time.
It's a printer silly!
Many retailers offer OKI printer catridges among their merchandise. Some examples of these retailers, which also serve online, include Office Depot, Amazon, and OKI Data.
One can purchase an OKI Data printer from the official OKI Data website. One can also purchase this printer from Staples, Office Max, Tiger Direct, Amazon, or eBay.
When looking for a Xerox printer the best places to look in order to compare features and prices are Amazon, Staples, Memory 4 Less, and Xerox Direct.
Xerox
Xerox
Xerox Phaser 8550 ink printer can be purchased from many places on the internet including eBay and Amazon. One can also purchase a Xerox Phaser 8550 ink printer from the official website.
One can purchase ink for the printer Xerox 8500 on various websites like Amazon or eBay. One could also go to a local computer store and ask if they have any ink for the printer Xerox 8500.
Many companies manufacture laser printers that include the model or series number A3. Xerox, Oki, Lexmark and Hewlett Packard all make laser printers that contain A3 in the description.
One of the advantages of using a Xerox Laser printer are it is easy to troubleshoot a Xerox Laser printer whereas other printers you may have to call a professional. Another is quick printing speed.
The Xerox Phaser 6110 is a commercial colour printer. However, according to the Xerox website it is no longer manufactured. It may be possible to buy one second hand or find a similar model through Xerox.
You can purchase a Xerox scanner from Xerox directly. You can also purchase them from computer and printer supply stores such as Staples Business Depot.