Why don't you both have a go at it?

I've never played either, but I guess you just need to make a map with a certain atmosphere and theme, like Bogie's rat pad, and suggest the potential for a few monstery things, and away you go

I'm pretty sure the experts will tell me if my dungeon isn't dungeony enough - I hope they will, anyway

Oh yes! And traps. Not got the hang of them yet, but I try to leave enough space for DMs to add things they want - if the map is worth using