Almost all of my sheng samples are from Hou De, and many of them have sold out.
I can reiterate what many have surely told you already - the best value in a drink-now sheng that is readily available is the 2003 Keyixing YiWu cake.
In the 90-2000 vintage, this is one of my favorites:
http://www.houdeasianart.com/index.php? ... 55584b65cf
Storage and leaf quality is the biggest factor in all of this, and are hard to see on a web page. Price and relative age, and even the vendors description, give no indication of the quality of the tea. You will have to find for yourself what to look for and share notes with others.
A certain member who is lurking has taken to sourcing all his puerh locally for these reasons -- those of us on the east coast are sadly out of luck.