Hi!
I just bought some Zig markers but have yet to open them. I am currently waiting for my shipment of tombows too! One brand of brush markers that I love are the Faber-Castell Pitt Brush Pen. I know you can get buy them as a set from Amazon but I bought a few individually from Hobby Lobby. They are great for brush lettering and are made from waterproof india ink which allows for bold color and a smooth transition onto most paper. I have also bought a few brush pens from my trip to South Korea, one of them being a Monami Regular Fiber Tip Non-permanent Fude Brush. It was fairly cheap, about $2 and comes with a refill. It took a little while to get used to as the brush tip itself is shorter than what I am used to, so there is less variance compared to the FC pens. However, it goes on smoothly onto most mediums and is fun to play around with, plus it was only $2! By the way are your zig markers the dual sided ones??