well, i got my LR from premiumaquatics. very nice rock, great customer service. one of the reasons why i like PA for LR for a nano is they let you order any amount you want. a lot of places sell the LR in certain sized lots...25lbs or 40lbs or whatever. PA will let you order 1lb of LR if you want.
the TBS and other aquacultured LR that is similar is nice rock with tons of life on it, which is great if your setting up a FOWLR, but IMO if your setting up a reef the shape of the rock is by far the most important thing, and all that life on the TBS rock just gets in the way.
my father-in-law ordered some LR from Dr Fosters, and i gotta say that both he and i were disappointed (he was probably more disappointed then i was...it went into his tank after all

) with the LR that he got. that being said, i'm sure that there are plenty of people who have got their LR from Dr Fosters and are very happy with it.
FWIW, and i'm not sure what size tank we're talking about here, but on all of my future tanks i plan to set them up with a base rock/ LR mix. reefer rocks has some very nice looking BR and it cost a fraction of the price of BR. just an idea, if you wanted to save some cash, but if you're setting up a nano it may not be worth it.
HTH:thumbsup: