Yeah, agreed. When Papa Smurf was alive they had their shit together. I would imagine even being an Ultramarine got a lot harder after Guilliman died. Going from having an obsessive, benevolent supergenius tell you what to do to making your own decisions has to suck.
http://steamcommunity.com/groups/gw_dark_angels_xDAx Hop into steam and play Space Marine if you have it.
I'm going with the sons of Vulkan! Good ole' Salamanders. Though I don't think any one chapter is necessarily better then another, I do love the Salamanders basis in that they're truly around to protect humanity and show them that their courage can inspire just as much as their own. Also I've been reading the Salamanders omnibus and it is outstanding!