From the pioneer speakers I've HEARD they dont really have that good of bass but every speaker is different. Usually with speakers you get what you pay for. I really like my Infinity Kappa's. Really deep sounding bass (not flat) and good mids and highs. Polk Audio is a really good brand too but they are $$$
The head unit looks good though

The doors are actually 5.5s stock but 6.5s will fit