Err this is probably wasted on me but ahh well.
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You're probably going to love that, I've got several of the H&S brushes and I love them because even at my skill level and use they save so much time and give a really nice look for the models.
If you ever have to do a horde army, large vehicles or scenery they can save massive amounts of time, whilst as you get better you can do more detailed and intricate work.
I quite like Vallejo air colours, and if you're doing scenery they do 200ml bottles of airbrushable undercoat that can very quickly and cheaply (about £10-15 a bottle) let you basecoat scenery or tanks so you only really need to highlight/wash and varnish them.
If you've not got it already, pick up some of the vallejo airbrush cleaner and thinners (the clear thinner) as the cleaner works really well for acrylic paints, whilst the thinner is far better than water for most acrylic paints as it doesn't reduce the adhesion.
If you are using GW paints you'll probably need to experiment a bit with the thinner to get a nice thickness of paint that works well for you, and if doing a lot it's worth getting some large dropper bottles and decanting the paint into them along with the thinner so it's ready to go.