My chart is:
#1- Adom
#2- Doom RL
#3- IVAN
Adom is my favourite. Lots of race/class combinations (really different to play), lots of secrets in Wasteland style (that is one of Biskup favourite games indeed), hard and challenging.
When I want more action I love to have a quick Doom RL game.
I recently discovered IVAN and it's really cool, too bad it will be probably no more updated or completed.
Some days ago I also started playing Triangle Wizard; the game is still simple but I find the concept (real time action top down roguelike) really cool.
About Angband, I tried the vanilla one but I founded it very boring, it lacks many features compared to Adom. BTW I appreciate the 100% tactical orientation.
Maybe in the future I'll try some variants.
I also really like Spleunky and Cortex Command (not roguelike games).