Nooooooooo, please do not buy enterprise level IT hardware from Argos !!!!!!
1 - go branded for proven relaibility & quality e.g. HP, Epson, Canon, Brother etc
2 - Why a laser? check out high end inkjet (although colour laser finish is brill).
3 - Look at cost of consumables. Seperate black cartridge is great but what about 3 colours as well.
4 - How quickly is the first page out (don't want to wait for ever for it to warm up).
5 - Look at page per minute, specially if you are doing bulk runs
6 - Look at paper trays. How many & how big to save constantly refilling. 2 might mean one for plain and one for headed paper
7 - What about special stationery like printing envelopes, invoices etc
8 - Check connectivity, most are USB, ethernet means you can network it and share between PCs
9 - Warranty. Onsite is best, return to base is usually cheaper
10 - Just a printer? Many devices now scan, copy and fax as well.
PS thanks ..... just thought of another page for my site
http://www.smallbizsoftware.co.uk 10 top tips for choosing a printer. (PS, help me out and click on the Amazon link from my site and check out their printer prices)
Graham