For SPS the places to watch are
www.saltwaterconnection.com,
www.jlaquatics.com and
www.oceanaquatics.com. I've gotten amazing pieces from all 3 places. Locally, you just need to hit the stores on shipping day. If you're looking for something specific, let them know. They've all been good to me for specific requests (sometimes you just need to be patient is all). And of course, hit up the members who have SPS because usually they are all too happy to sell frags (hint hint you've never asked ME
)