>>43350501Blade of the Iron Throne has sections that are literally plagiarized from Riddle of Steel. So I guess it's good because Riddle of Steel was good. There's also Song of Swords, which you'll find in a thread on /tg/, which is a more comprehensive rewrite. They're still working on it, so there's some bugs in the system and no magic system yet, but I personally prefer it. Blade has the advantage of being published with a magic system.
If you prefer percentile systems, there's also RuneQuest which is basically purpose built for a Sword and Sorcery game. That has both a great combat system and a good magic system, with lots of options for different kinds of magic.