The PowerMACs WILL truly be awesome in the near future.  The primary concern
is the ability to run BOTH Mac and IBM software on one machine, I would
suggest.
On the Macintosh side, if you buy a big enough PowerMAC (7100?), with enough
memory, you should be able to run ANY Macintosh software successfully.  The
big breakthrough in SPEED will come when the applications you may want to run
will be converted to "NATIVE MODE" PowerMAC code.  This means that the
application software that you run will be especially written FOR THE NEW MAC.
Many latest versions of standard software are written in this mode.  Yet,
even versions of application software NOT written for the PowerMACs should
run successfully on the new machines, provided you have accounted for the
floating point unit compatibility.  If you find that an application requires
an emulation of the old-style hardware's "FPU", there is a shareware software
fix for this problem, which Apple probably has included in their system
software by now.  In practically every case, your choice to run with MAC
for MAC software would be a good one.
On the IBM side, the software look and feel of IBM Windows will be available
in full force soon with software for the MAC called SoftWindows 486.  With
this configuration, you can still beat out IBM users for speed, etc. and
be able to run BOTH Mac and IBM software. Pretty neat.  SoftWindows 486
may already be available from Insignia solutions.
The "AV" machines allow you to do "VIDEO IN" and "VIDEO OUT".  This is
particularly important if you want to use your Macintosh screen for direct
access and viewing (by hand or program control) of videotape material, laser-
disk material, etc.  Many medical services are becoming available in these
formats, and an "AV" station can be easily set up to make media sources
available at the computer screen and through the computer's speakers, etc.
GOOD LUCK