it being a business laptop
I am shooting in the dark here, but I am assuming that you do not work for a major corporation, but have your own business. I that case I would recommend Windows 7 Ultimate (if you can afford it). Definitely purchase the retail CD, that gives you a lot of options for troubleshooting if you have problems with your computer in the future, or want to purchase a new computer and install W7 on it. Personally, I really like XP Pro and still run it occasionally. But for security you really need Windows 7, and then lock that sucker down security-wise. Your laptop may run a bit slower, but if you are only using normal business software it really should be ok. If you are running graphics programs, video editing, sound editing or such your current system will not handle it (I doubt you are, but as I said in the beginning, I am assuming).
Unfortunately, unless you know Linux, running it can lead to headaches if you regularly deal with clients/customers who are running Windows and Windows programs. In business, you don't want to constantly be figuring out how to read a customer's data because Linux doesn't recognize it. And especially the vice-versa...a customer can't open your data you send to him because it was created in Linux. Many Linux products claim to convert to Windows products format, but I use to get clients emailing me that they cannot open blah, blah (because I created it in Open Office). Been there, done that for 20 years before I retired.
[EDIT afterthought]: I suggest avoiding Windows 10 like Bubonic plague. Too many problems, total lack of privacy, constant problems with updates causing problems, etc. One man's opinion.
Edited by ranchhand_, 15 February 2017 - 10:02 AM.