My large tanks came from various photo stores - they are all brown DATA bottle type.
My smaller bottles came from Amazon - they are white creamy plastic.
Since I have a dedicated darkroom and the room is always dark, the bottle color doesn't matter.
There are passionate debate on plastic vs glass on APUG. My experience is, if you choose the RIGHT PLASTIC, it's perfectly fine. Mine has a plastic code 2 on bottom.
I don't use collapsible type and they really don't have a good reputation.