MArco, I suggest you get a Presonus Firepod. Great mic preamps as they say...
If you get the other interfaces, you shall still need mic preamps. I prefer buying separate mic pres for more flavor in the signal chains but for a minimalist setup, get an all-in-one system that doesn't have bad preamps. They say the Firepod has one of the best built-in preamps, and it can slay any PTLE (focusrite preamps in there).