If is it better to buy ink printer or laser printer, depends on your needs. You have to know if you need to print in black or color, what print quality is expected, if you prefer multifunction printer, which brand you like, how often you will print and how many pages.
In case you plan to print occasionlly in medium or lower quality, probably an ink printer will be a good choice. I recommend laser printer, if you need to print larger volumes of documents often or daily. Color laser printer can provide high quality print on special paper, but they are usually quite expensive.
From long term perspective I have a good experience with black laser printer. You have to check the price of printer and ink / toner, before you make a decision.