Other potentially well (ish) known brands for it, at least in the UK, are GOSH rainbow and the less well known but more easily acquired Andrea Fullerton "Gemstone Overcoat" (the latter is from Superdrug)
Another awesome tip for these types of topcoat is to try them with matte over them. Ideally, on a dark colour - on a forum i'm on, one girl has really popularised the dark blue, flakies, matte mani. Black as a base would also rock that look!
I recently went kinda the opposite way though and wore a creamy white (MAC HK Vestral White, for the record), topped with the flakies and seche'd. It looked like glistening, sparkling snow!