I've used them in the past.
You just need to do a few things...
You need to talk to the 'right' person (think Mike is the owner). Tell him EXACTLY what you are looking for. You may want to wait till an 'appropriate' time to get the freshest rock (Don't just order...talk to them ....explain to them... get thier oppinion on what they think will be best for you...etc, etc, etc).
Second, you should have the rock shipped freight. Not only is it the cheapest way, but IMO, the BEST. You know exactly when it is shipped and only hours later, you pick it up directly at the airport yourself (some building directy behind the airport off route 7).
Personally, I couldn't have been happier with them...I got great rock (Walt Smith - some of the best around - just do a search) at about $3.50/lb shipped (bought 80 lb, but think I ended up with about 90 lb)....thats CHEAP!!! There was a time that he offered me (and anyone I told - just mention some code he gave me) a 10% discount (he sent me a PM because I raved about them in the Vender forum).