Which would you the best use of your time and money and be beneficial ( assuming you are reimbursed 5-6k/year) and assuming you won't gain anything much out of it . Why to do it , just for the heck of it and to have a masters degree under your belt and have some thing to keep in line as opposed to just wasting time. I come from electronics background with no CS experience,so both MS and MBA would be equally tough(MBA would be a bit more I believe, hate commerce crap)
If you don't have a passion for it or it is not part of a greater master plan, save your money and time. Source: I have graduate degrees in both science and business and I did that just to get my current position which I enjoy.
I say go for MBA , would be useful if you were planning to move to another country
To check a box WGU, for rigor OMSCS
MBA I guess, if you have to. Sounds like a sad use or your free time for 2 years though. Might help if you want to be a PM, I guess. Still sad tho.