Is the iMAC a good choice to make a VST HOST out of?

I know this may be an amateur question for many here but I'd really love to hear what you think and/or advise...

http://www.apple.com/imac/whatsinside.html

I want to run programs like

BFD
IVORY (Synthogy)
Vienna Symphonic Library
Spectrasonics Software
and a few more

Thank you in advance...

Which iMac?

There's been already a theory of them… and in the recent ones: the G5 or the macintels?

I believe the G5 would do nicely but make sure to install a shlaod of ram for IVORY and Vienna Symphonic Library.