Treasure coast is my all time favorite strain. both good for potency, and yeild. and also noob friendly. when i was a noob, they grew no matter how bad i neglected them.
u gotta remember, they they WANT to grow. u just gotta let them.
=)
as for vendors, i got my particular strain of treasure coast from thehawkseye
but my new favorite vendor is sporeworks.
But spores101/mushbox and ralphsters are also legit.