What's the best sand for DSB these days?

[Salty hands]

I've been in the hobby for quite some time. I'm looking to add a DSB to a fresh 90. The last time I bought sand was South Down Carribean play sand from HD. Petco had some Carib Sea at the right size but wrong price. I was really hoping to stay away from the Silica based sand. Any one have some good ideas?

 

[willray]

Go with sands that will aid your tank I.E. adding calcium,buffers,trace elements....something calcium based.I like oolitic type sands myself also we hear/read/see good things about the sand Marco Rocks has.