I started with one of reaper's smaller kits, a learn to paint kit that came with a decent amount of MSPs, a couple HDs, a few Bones (flexible plastic) minis, a brush, and a nice paint case with foam inserts for your paint bottles. It was under $30 and gave me enough opportunity to test their paints out on the supplied minis and is packaged with a learn to paint guide. Personally, I loved them. I also buy from army painter, but tbh, I like reaper's triad system. Makes shading and highlighting super easy to plan out. If you aren't sure about the paint quality and want to try for yourself, get one of those stater kits. They're inexpensive but all inclusive for painting the included minis.
I do like the dragon blue, btw, the HD's have more pigment in them, and they look very very good.