Jacky, ooooh thanks for that. I guess what I am also thinking of is what Squishy said in one of her posts to someone way back, in that I don't want to be swapping between 2 differing models all the time, use one and get used to it (same with paint make). I guess once one is practiced at painting, then one can move up the ladder a bit more for something a little more 'precise'.
My guess is that @Squishy was infering that you get a brush and learn it, for a significant time, not for one session and say 'this is poo, I'll buy another'
Regardless of what brand you pick it will have its own idiosyncracies, it will depend on what paint and psi you are using.
get it all dialed in and magic starts to happen. Chopping and changing paint / brush etc will lead to frustration.