Looking to build something for 'myself' for once here

For the way I am planning on doing things I have to make a decision. 2 19" monitors....1 horizontal and 1 vertical.
Or 1 25" rotating monitor.
Pro's and cons...
2 19's means that both can be used at the same time although sacrificing the much larger size of the 25"
Rotating monitors are just 'COOL' especially electrically rotated one's which is what I would build....which I think would just make the project much more fun to undertake.
So which would you do if you had to make a decision

One thing I forgot to mention....this is NOT for MAME. This is for real arcade pcb's that will be switchable like the machine I made years ago. I will have a seperate MAME cab.
Let me hear your thoughts please.
Thanks
Andy