I'm in love with this holder!
I'm a beginner and I started with the Speedball oblique holder that came in a calligraphy kit. I found a blog comparing the angle of the Speedball with other holders and the Turned Wood oblique holder was recommended for Nikko G nibs, I purchased the Tapered model.
It's definitely a major step up from the Speedball. Way more comfortable, the angle feels right and it's very stylish.
I think this is a great holder for writing several hours.