Which version of Ableton should I get and which plugins will I need for producing electro and dubstep?

I am going to buy Ableton, however I am not sure whether to get Live 8
or Suite 8. I also do not know which plugins to get. I have tried the
demo of Massive and I really like it, but I assume that it is only
really useful for basslines. So would the native Ableton instruments
and effects supplied with Suite be enough to do everything else in the
song, or would they sound cheap and unprofessional? If that is the
case, would it be a good idea to just buy Live on its own and then
NI's Komplete 7 which includes Massive, or would I still need to buy
separate plugins?