so many times people go for a windows pc because it seems cheaper, but if i didn't switch to mac i doubt i'd have had achieved what i have and in that regard i have more than made up any price difference. Not just that.. less repairs, no antivirus software, and purely on time saved, a mac makes up the price difference in no time, as well as sanity which can be a very valuable asset to any workplace.
for example had your boss had a mac with iWeb i'm pretty sure the website would look better, would have been easier to design and will give a much better appeal for the business, and hence bring in more revenue.
and while a mac won't speed up applications you will save time in a lot of other ways. I remember when i'd get a new pc it would take a good long afternoon until it was set up to the way i liked it, when i got my new Mac Pro recently it took me less than an half an hour to have it updated and everything set the way i liked it, if anything i miss all that geeky time spent customizing windows.. and i feel that sums things up in general with a mac, you don't waste time doing pointless things, you spend that time producing and creating, and you just get more done with your time, and for any business that doesn't rely on windows only software i feel that is more than enough reason to make the switch.
and apps just seem to work better in Mac and simultaneously, even on my old pc that i built with the best possible components i'd run into conflicts, leaks and endless annoying problems that would completely distract me from the task at hand.. i seriously loathe windows, and get bored of mac vs pc debates, apart from the odd little thing and how some software isn't available on mac os, i cant think of a single reason why anyone would want to use windows if they aren't serious in getting their creative work done. Windows has a tough time having to deal with the endless hardware configurations, Mac OS knows intimately what hardware it needs to deal with and as a result software can be designed more efficiently, it's like a garage having to deal with every brand of car compared to one that deals with just one... you just know the latter is going to do a better job with your car.
there's a reason successful production houses are never solely windows operated, if your business relies on creative content then in my mind you HAVE to switch to mac, your boss would be silly not to.
Someone mentioned how Mac OS fuels creativity, and the way the OS looks does lend to that, for example in Vista or even XP if you want the best performance you generally have to turn off all the 'pretty' features such as aero, and the feeling is you are working in a dull grey or garish blue office block.. whereas in Mac OS you can't really turn off 'pretty' and you are always working at a nice upmarket london office with the windows open and nice warm colorful colors and rich textures. You can natively have your background change every so often, that feature alone makes my day feel more dynamic and exciting and it might be a small thing but its just something that adds to my joy of using Mac OS. I never have that feeling "ugh, i need to turn on the computer, clean the registry, remove spyware, fix a conflict, download updates, reboot, close all background processes, then manually open folders, find what i need, and then work"... with a mac its wake from sleep, go to spotlight type in the filename, press enter, and just start working - time saved - sanity maintained - happier and more productive workplace.
and if none of that works, tell your boss that clients, friends or anyone he wants to impress will just take him or her more seriously if they walk into the workplace and see those fancy apple mac machines everyone talks about and sees in films and fancy ads, that same notion translates to the workforce, who will feel they are working somewhere more upmarket and dynamic.