Ink or toner has been my limiting factor for printers - I have a great 400 color laser, but when you have to replace all of the toners it costs almost 400.00. TigerDirect often has inexpensive laser printers, but you have to really look to see that some don't have any toner at all. Watch your prices.
You also need to make sure that your state will accept the above mentioned security features - Washington said that those features are not actually CMS regulated, but are just one outside agency's interpretation and that they were not going to adopt them. My state actually said that to get rid of the confusion they were considering making the security paper mandatory for all scrips - when I told them that would be miserable for offices such as mine due to cost they really did not care. Currently I tell all my pt. that I fax and I only handwrite medicaid Schedule II -- I just am frustrated about having to buy a special printer or even special paper just to satisfy some bureacrat's rule.