dump the sub,
get floorstanding speakers,
get a good integrated amp.

do you want to have radio? because when you don't really need it, you could go for an integrated amp, and buy a seperate tuner if you still want radio then.

you could go for monitor audio silver rs8's, b&w dm604's, kef's, magnepan (if you have room), dynaudio, paradigm, ...

and for an integrated amp, you could go for denon, rotel, outlaw, nad, cambridge audio, maybe even primare...

listen to some things, and tell us what you think about them.

and how big is your room where you are going to use them in?

Keep them spinning,
Bert.