I've recently tried Angband (or one of the variants or something) and hated it. If anyone could point out it's finer parts, maybe I might enjoy it. The maps I ran across were absolutely horrible.
Hm... Angband...
I have got a love/hate relationship with Angband. It is one of the simpler roguelikes out there, easy to pick up and play (and now even more in the 3.0.8 betas, with friendlier menus and interface), so easy in fact even my girlfriend started liking it. It also has a certain action-game feel to it, since you get more and more stupidly powerful items, maps are rearranged (so you focus on tactics and inventory management much more than long term strategy) and the feel there are no puzzles to solve, like Nethack, nor it is extremely cruel against the new player, like Crawl. You have that urge to collect nice items, resistances, etc, which I find fun. Mindless fun, basically.
On the other hand, though, there is a *huge* dungeon (100 levels? It's just absurd), the rainbow monster problem, where you have hundreds of silly variations of a same monster, and the overall grindiness of it all. I think Angband would gain a lot if the dungeon was shorter without reducing its difficulty, since it would put a bit of more pressure into the player. Oh, and yes, the maps are horrible
, but at least you get to tunnel all the way to find treasure!
.
Yeah, it's a very personal opinion, but I am sometimes in an Angband mood. I find it fun.
For a variant with (much) cooler maps, try Unangband. Lots of flavor in the dungeon, really!