Radon Testing Devices

Seems like there is about an even split for those using CRM’s vs those using charcoal/cans. How many of you use both, depending on the situation? For example, maybe you’d use charcoal in a vacant house, etc. If you do use both, do you give the client a choice of which method you’ll be using? Do you charge differently if you’re using a CRM vs charcoal? Just trying to get a feel for the norm. Thanks!