for me i would go for a new HU first then i will consider the front speakers...

cuz FM sound quality is @#$%&*... and i would like my HU to play CD tht sounded much much better... as for the front speakers try looking for used ones if you are on budget...

for your music choices... try look for japanese stuff... alpine, eclipse etc etc... they would do a great job for your preference...

cheers....