Hey @AimlessWanderer, I have just ordered my very first synthetic brush (Trafalgar T3) and like you.Not only do the synths differ from the boar, but also from each other. I've just gone all synthetic. My first boar brush was great. It's replacement wasn't. I'm now using three synthetic brushes on all my main products, to determine which will live in the travel washbag, which will live in the bathroom permanently, and which will by put away as standby, or only brought out for certain products. Not only are they varying in speed/efficiency and face feel, but also consistency and efficacy of the lather too, in my opinion.
I'd be much obliged if you could share some more info on the 3 brushes you mentioned above.
P.s.: I face-lather and prefer brushes with strong backbone.