Word is sand is better in that waste does not get trapped between sand whereas cc will trap the waste. I too just changed over to live sand dsb. Much easier to maintain.
DSB stands for deep sand bed. Sand is a very key component for creating a DSB. You need to get a fine grain size sand. You can use Qwikcrete or Southdown playsand...then buy a couple pounds of live sand from you lfs and seed the playsand... ~or~...If you have an established tank with CC in it, you can fill a couple nylons with some CC and set them in the tank to seed the playsand. HTH
To get an idea of dsb's and what to use and how they function check out this link
<a href="http://www.rshimek.com/reef/sediment.htm" target="_blank">www.rshimek.com/reef/sediment.htm</a>
Good luck!