YeetSeeger wrote:Do you find an advantage/disadvantage to using that over the Vallejo?
If you are trying to get something like a glaze, the Fluid lets you thin (that is, make less viscous) and also increase your drying time. On the other hand, the Retarder medium does generally keep the same viscosity to the paint. So, it just depends on what you are aiming for.
Is the paint you are adding it to already the viscosity you want? If yes, go with the Medium. If no, go with the Fluid. I have both and I don't think I'd really jettison one for the other, although, for me personally I find I am trying to get paint
less viscous usually, so the Fluid is a little more handy to me most of the time.