Your get the most for your money with the second set-up, you should spend more on the speakers though and maybe not worry about the sub til later or get a cheaper amp, good bookshelfs I recommend are the monitor audios bx2 or alesis m1 mk2's , I think the monitor audios bx2 will be better with metal as they have a crisper puncher sound compared to the alesis's , the alesis have a better soundstage and stereo imaging. I don't think the monitor audios bx2 would be good with gaming though they are definitely made for music and not gaming, the alesis's however do handle gaming excellently, there big airer clear netureul sound does emerse you in the game which is what you want from a gaming system, they are loads of bookshelfs and amps to choose from though you should listen to some before choosing which 1's to buy.