If you're a serious watercolor painter, this new brand might make you regret buying other professional paints in the past. I've been painting with Sennlier, Schmincke and Rembrandt for a few years and those paints can cost a small fortune in 48 color sets. Not Paul Rubens though, these are roughly 1/3 the price... but are they good?
Not just good. They are great. So great in fact that I am so sad they weren't released to the USA sooner to have saved me a lot of money. There is overall very little granulation in this brand (outside of the normal for Ultramarines, Umbers and Cobalt Teal) so I will not directly compare them to my Daniel Smith paints who are known for that characteristic.
However, they are every bit as good as every other professional quality brand in performance, pigment load, salt reaction, flow, lifting and glazing. Let's not forget almost entirely LIGHTFAST too! Paul Rubens paints have been around for a few years now in China, but it wasn't until mid 2018 the half pan sets started being easily obtained on Amazon.com.
The 12 and 24 color standard (and also the mica sets) are available here now. The 48 color set is supposed to arrive mid 2019. The importer for Paul Rubens (and their student brand Pretty Excellent "MeiLiang") has been allowing those of us in the states to purchase these safely and quickly. They are even introducing their watercolor papers and brushes now, which are also amazing.
WARNING about buying from China: I tried to get some of the Paul Rubens tubes and other full pan sets that aren't available in my country directly from 3rd party Chinese import sellers. I ended up having great difficulty (between month long shipping times, import duties and sadly a rip-off artist on the Chinese version of Ebay who slapped a fake tracking number on my order and it took months for me to recover the cash!) So I can tell you from personal experience, it's worth the wait for them to become available on from good ol' reliable Amazon.
Note --- 05-2019 --- 48 SET NOW AVAILABLE ON AMAZON USA. As an Amazon Associate I earn from qualifying purchases. They also have a lovely mica based glitter shimmer paint set, which really sparkles on both light and dark papers!