Re:bench variations..best for chest
Everyones body works differently mate. A training buddy of mine gets shoulder pain when doing flat bench and his chest doesn't respond well at all so he does most of his chest work at a decline angle. For me however its the complete opposite, decline bench wrecks my shoulder and i don't get much pec response whereas DB press on a very slight incline feels smooth as anything and my chest responds really well from it.
Find what your body's most comfortable position is and you'll probably find that this is what position your chest will respond to.