Ofcourse you can use what host you like and it doesn´t matter as far as you don´t use the intermal plguins much, in cubase the intermal plugins aren´t that bad but in FL Studio the intermal plugins are far from good, especially the crappy sounding synths, i know so many people which say the same about the FL Studio synths, the plugins are useable but the synths don´t sound like real hardware and they don´t sound analog AT ALL. It´s up to everyone if he use this plugins but IMO they don´t sound like analog synths at all and they don´t sound like hardware synths at all, too, they just sound like cheap software synths and i can´t imagine anyone who can do good music just with the intermal fruityloops synths.