I chose Semantic UI for my project: https://suitocracy.com if anyone wants to see another live example, it also uses the default theme.
Like others, I was somewhat concerned about the bloat - over half of my front page's total file size. But at about 250KB all up, I realised this was only around a tenth of what the average website throws at people these days. https://www.wired.com/2016/04/average-webpage-now-size-origi...