Hi Janespastels! I run an SAA Art Group (Art Zone) at Wigan, tutor a Watercolour class also in Wigan and also run Demonstrations and Workshops at art groups around my area, from Liverpool, through Warrington and Wigan to Manchester. I've never used these Russian paints, so I can't offer an opinion.
I use SAA Watercolours for all of my watercolour demo's and workshops, and also any private watercolour commissions.
SAA Watercolours are slightly sticky and this is perfect for my style of loose painting; I like Impressionism.
This is not me being biased, but I really do like the way the colours work and behave.
As I go through a lot of watercolours, I also find them extremely cost effective.
Hope the above helps, but come back to me if you want any more information.
Very best wishes,
RSC Wigan / Warrington / St Helens