Hi. I'm considering purchasing a Monochrome/Black & White Laser Printer for home printing. Kindly suggest any model from HP, Epson, Canon, Samsung, Xerox or any other reputable company. My budget is up to Rs. 7000. I do a lot of full page black text & picture printing, about 250-300 pages a month. So the cartridge/toner should be able to run for atleast a month. Kindly keep in mind the price of new cartridge/toner, and possibility of refillable. Please base your suggestions on these main points. Thanks.