I don't mind "ugly" white boxes, and i prefer modular and generic over specialized and integrated. Take for example my bad past experiences trying to fix broken mac hardware w/ integrated monitors: if the power board goes, good luck fixing it affordably. Where as with a PC you just stick in a new PS, or replace the monitor, with a Mac the whole thing is screwed.

What if you wat to upgrade your monitor? Oops can't (unless you have a source for Apple parts $$) -- it's attached w/ all kids of funny internal connectors... and then do you have any upgrade path? Admitedly Mac hardware is much better now than it used to be, but it's still too fiddly and proprietary in many areas. OWC sells good supplies to outfit desktop Macs, just make sure to get a reasonably normal tower model.