I was cruising the web yesterday and ended up at USA Today's college basketball team preview pages. WOW, very impressive write-ups on all the teams I looked through including teams that are expected to finish in the middle or bottom of a conference.
These write-ups are much more detailed than I have found on other sites. I highly recommend that you give them a read.
USA Today Team Index
Another great site for pre-season team write-ups is Storming the Floor. They do a nice detailed job on the top teams and a nice summary write-ups on the conferences.