I've been using tubes of Acrylics for donkeys years.
You squeeze a few colours onto the edge of a palette ( = old plastic polyfilla lid!) and they come out in a toothpaste consistency; using your brush you pull out bits of the colours you want to work with into the centre area of the saucer to mix them and use them, adding a little water to get them the consistency of cream. Then paint. You mix the exact shade you want from the several colours around the edge, never use a shade straight from the tube. You can add white or brown etc to get a deep shade or a highlight, No need to buy triple shades at £6.00 GBP a set!
When its all dry, the paint just peels off the lid like some sort of pigmented scab ready for the next painting session!!
Yes, there are varieties of quality; I tend to use Cryla, which have a superb range of colours, last for years and have a lovely rich pigmentation and a creaminess in use. Their metallics are fantastic btw. They have a range of golds, brasses and bronzes which look superb when mixed up in a unit on Ancient armies. For facings, I use Cryla wherever possible, the yellow gives a great shade, not too lemony, and covers very well.
I also have some cheap tubes which are perfectly fine for wargames figures. The cheap ones tend to dry out quicker, in my experience, and they sometimes take a bit of work to get them mixed and flowing.
If I were you, and just thinking of trying out Acrylics Id pop down to Argos and get one of these:
link
Its an Acrylic Painting Box Set – 267/0861
26 tubes of colour, brushes, palette and a nice wooden box, all for less than a fiver. When you find out which colours you use the most you can get larger individual tubes of your choice! White and black will almost certainly be a high use pair of colours. I also seem to go through loads of Burnt Sienna.
I keep my paints in an old tupperware box, with a lid, and they keep fine for years & years.
I dont know what the brushes will be like in the boxed set, not too great I would think for the price, so you might like to get a few nice brushes. You dont need sable for acrylic paint on wargames figures. Some of the modern nylon and hog bristle brushes are fine. Ive had mine for absolute years and years. Just clean them prompty when you finish, making sure you clean off right down to the hasp, and store them in a jam jar with the bristles sticking up out of the jar to keep the point. If the point starts to go with use, you probably arent cleaning your brush properly. To revive a brush, just pop a bit of fairy liquid on the end and rub it in with your fingers before you store the brush. Amazingly, you can get better detail on a figure with an 0 brush than you can with a 00 brush sometimes! There is more paint in the reservoir of the brush I suppose, as long as its flowing through a point
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While you are Argos Reeves do a nice set for less than a tenner, or pop into an artist shop and have a look at the range they recommend for acrylics. You will only need a few, and you can probably use the cheap ones in the box set for dry brushing! :o) The stiff flat brushes are great fro dry brushing too btw.
I have used GW paints for my sons Warhammer stuff, and they are lovely. They are very easy to use, have a good liquidity and opacity and are very easy and convenient. Just shake em, pop the top and dip in your brush. They dont mix particularly easily from the bottle compared to tube acrylics, imho so you may well end up with several discrete shades of just slightly varying colours to do half a dozen uniform colours
.. nice enough, but be prepared to spend £50-£60 to get your paint stock started! If wanted a particular shade Id certainly use them again.
A couple of extra tips I have found useful over the years. For spear tip highlights ( or bayonets) use one of those silver ink pens from W H Smith – just a dab here and there on the ends saves opening a bottle or pushing out colour from a tube. Similarly a gold pen can blob a shako badge on a 15mm figure.
I also use Rotring pens to mark out shield designs etc on Ancients prior to painting the designs.
Happy painting.
PS I dont buy wash "dips" or "inks"- Ive been using Alkyd oil paints for years to put on a thin brown or Paynes grey wash over my figures for good effect. Works very well.