Looking for a good solo dungeon crawler: Shadows of Brimstone: City of the Ancients (Revised Edition) , Descent: Legends of the Dark, Massive Darkness 2: Hellscape?

Hi, I'm after an epic solo dungeon crawler and these 3 games look fantastic but I haven't played them nor do I know someone that has played all 3 so I am looking for your advise on which to purchase, Could someone do a comparison and perhaps suggest other dungeon crawlers similar to these?

I'm looking for something not too complicated with not too much story, mostly focusing on character development and action. I already own Tiny Epic Dungeons, Gloomhaven + Jaws of the Lion) Thanks!