haha, I like it Isiberian... If I had an unlimited budget, James Hetfield and the San Francisco Symphony would be in my very own Sydney Opera House...
Seriously though, with an unlimited budget, you get to fly everywhere and try anything. You don't even need to worry what brands are "best" or what costs the most. You get to see/hear everything and take what you want.
The truth is, you will throw 250k speakers into a room and a client will love them because they cost 250k, but if you are building a room/system/etc. because you LOVE it, you use your money to get the BEST THING EVER (for you).