EvilSaint - 2:21 am on Jun 24, 2011 (gmt 0)
I would be very apprehensive about showing a 410 on a content rich page. Especially if its unique content and has inbound links coming to it.
If server space isn't an issue, would definitely advise you to keep the pages as a normal 200. If not, worst case scenario, a 301 redirect to a similar page to pass the PageRank & link juice value across would suffice.