True, you don't have dials to "screw with." Instead you get the pleasure of switching filters around all the time. I used an Aristo VCL4500 head. I'll take the ability to change contrast by simply turning a dial over removing and replacing filters any day. When I attended darkroom workshops the filters drove me crazy after being used to the ease and simplicity of the dial on my VCL4500.
To each their own. Changing filters doesn't bother me nor slow me down one bit.