Michaela,
your Vienna Acoustics speakers are, in fact, a very good match with the McIntosh-combo - I listened to it when buying the McIntosh combo I have. Go and listen to the speakers you were advised to listen to - but be sure you do not buy sth only for the thrill of buying sth different. In order to get a noticably better sound than with the Vienna Acoustics speakers, you'll have to spend more than the 5000 $ you want to spend, I'm afraid
your Vienna Acoustics speakers are, in fact, a very good match with the McIntosh-combo - I listened to it when buying the McIntosh combo I have. Go and listen to the speakers you were advised to listen to - but be sure you do not buy sth only for the thrill of buying sth different. In order to get a noticably better sound than with the Vienna Acoustics speakers, you'll have to spend more than the 5000 $ you want to spend, I'm afraid