music production and 3D design and rendering.
i dont know much about either but im reading alot of articles since im also looking to upgrade my tv(32inch 60 hz )1080p to something newer.
from what i know is that gaming monitors difer from productivity in certain areas, like 120hz 144hz are not really needed for productivity (you might need to check if for rendering it does efect the quality that you see) 120 are more for gaming so you dont see that much blur on objects.also there are benq monitors that have fetures to reduce eye strain and fatige but also improves quality.
resolution is also important dosent matter the use but the distance is also better example is that a 4k monitor or tv is the same as other resulutions from far away. si its better to have 4k or siimilar when you are up close to it it will be much better quality.. also color reproduction, there are monitors that better repruduce color and they wiill market it that way(benq again and lg ) this is important becouse a blue you will see a blue not some other color .
also ergonomics(sorry for the grammar) some monitors you can put side ways --or verticall depending on your work this can actually efect how productive you are,and also simple things like tilt up and to the sides. some of there are things that monitors somethings to better than tvs becouse tvs are just ment to be static and seen at certain distances. you can check some of the parts that i wrote here individually and then compare them to your boss that way he can see the diferences betwen plain old tv even ifts 4k or whatever and some good productivity monitors
(also tell you boss that monitors can be put together for better multi tasking )
3 22 inch monitors are great for you kind of work not the same as buying a 40 inch tv
also monitors are easy to replace in case one goes out you would still have 2 but a tv is a bit harder to replace and monitors can be bought little at time, and keep adding to the computers and cost can be spreaded out !
this is a really good list to get specs, prices ,recomendetions and reviews to help the the info you need to compare.
http://www.tomshardware.com/reviews/top-best-computer-monitors,3917.html
also check NCIX in you tube they review alot of new monitors for diferent uses and migth give you what you need to help explain the diference !! good luck !!