Certainly NOT a stupid question. The only "s" question is the one you wished you'd asked before you run a barbecue, but you didn't ask it.
We're here to help when we can.
CS normally sends out just the one type, but any time you have a question, don't hesitate to contact CS customer service direct (they don't monitor the forum).
They can probably tell you what type they are sending out as or recent shipments.
Smokin'