[Dan296]

dont let your eyes off him for a minute. you look the other way and then suddanly you feel a draft in your chest and wondering why the man is holding a peice of still-beating meat in your face....


but yea. what i would do for plague marines is to buy both normal CSM and the metal guys. you can convert the CSM better when you have the plague marines for referance, and then you can use the metal guys for things like chosen, aspiring champions, stuff like that.
but if you are just starting a nurgle army, you dont want to get a baneblade. save stuff like that for when you have a good 3k list, not when youre just starting out.
as for bezerkers, theres nothing wrong with using them and plague marines in the same army. Khorne and the Big Papa have no beef between them [nurgles beef would be all maggoty anyway, while khornes would be, of course, rare (BFTBG!!) ]
but if you want a more nurgly force you can always have your chosen and lord with marks of nurgle. the bezerkers are just friends. that way, you can get the battleforce and not have to worry about selling the bezerkers or converting them to plague marines.
Plus, Bezerkers can be a good reserve force for your plague marines as well.