I know this is a difficult question and that there is no right answer but I was looking for ideas on the best sound for your dollar in terms of computer speakers. I am looking to buy new speakers and I'm not sure which ones i want to get. I know Logitech has always treated me well but I dont know much about others.

depends on what your sound card is capable of at present.
if you prefer logitech's,there are lots of of them in line.

just choose sub-speakers with bigger diameter.bigger
sub-speakers,better sounding in terms of bass/low response.