Hi, I have been playing WHFB for a few years now and decided I missed WH40k, so I figured I'd crack out my 6 year old CSM models and look into getting back into things. The last time I played 40k was 4th edition so it has been a while for me. I really like the Iron Warriors Legion's use of big guns and vehicles so I was hoping to make a force with lots of heavy firepower and I also did not really want to use daemons or cultists, as I would like to keep true to an all marine army. I was wondering what the really popular heavy support choices are and if it is at all viable to run vanilla CSM units for troops? also I have refrained from buying a codex or rulebook for this edition as I have no idea if there are a new version of either coming out soon and would rather not buy a book only to replace it a few weeks later. Any advice would be great and thanks in advance. For the ruinous powers!