First you might consider downloading the free Q6.5 update from Quark.com which fixes many of the myriad problems with 6.
Neither should be causing you machine to freeze at print. Can you print a postscript file to your computer for distilling? If yes, the problem is probably more slosely related to your printer. Make sure you have the proper printer and PPD (if applicable) selected before you hit the print buttom.
And yes, ID is far less problematical, but you'll have to get used to the new interface and the diffferent way ID handles different elements.