Im very envious of your budget but Im sweet talking the wife for an upgrade next year.
The standard Coffee Snob advice here is to go to one of the sponsors shops (look on the left side of the page) and check out the range. In the end it will be what feels best for you, not how much you spend.
Where do you live? If in Sydney, I highly recommend DiBartolis for finding out what is best for you. Renzo has all his range set up so you can use the same portafilter and coffee in each machine to see how each feels and operates.