Nothing out-Brogues Brogue, but if you like it you might also like Sil. It's very tight and tactical like Brogue, but your character building and equipment options are more complex.
A lot of people also like the bigger, more RPGish games like ADOM. They aren't as tactical or balanced as Brogue and Sil,
E:
but you might enjoy them anyway.
Not sure how I managed to forget that last bit.