? about Britax Marathon

It's annoying that the instruction book is attached to the seat, it's hard to look at so I figured I'd ask here. 

Does the seat recline to different positions when rear facing or just forward facing?  How?  Or am I imagining the recline feature. 

If you compared other Britax seats what made you decide on Marathon?  I have the Marathon but I might get Roundabout for DH's car but I can't remember what sold me on the Marathon in the first place.