Not at all sure what you are saying here.
The vrod is certainly better for ‘trate because it sports a halo (pick you material).
There is no difference between the “surfaces” of any of them for flower. Flower sits in a bowl on a screen and under whatever heater head you are using.
I believe that the SH and WE are better for flower than the Vrod due to the air flow hole pattern.
And I don’t understand “the other products don’t separate chambers for each type of need.
They all sit on a bowl that provides the separate chamber for flower.
The Vrod and SH both offer fab surfaces on the heater head. SH has to be Ti as it does not accept a halo. Vrod offers the ability to install the halo of your choice, SiC, sapphire, or quartz (any other halo material out there....I think that’s pretty much it)
@murf2010 - you got some good advice above.
If you are all flower, get a SH or WE.
If you are all ’trates, get Dcup, tbucket, or some other banger
If you are mostly or even frequently trates and want one device for both, get a Vrod as you can select from different halo materials.
If you are mostly or frequently flower and want one device for both, get a SH and dab on the Ti.
Least that’s how I see it.