Sorry one more stereo question

[Kerr]

So I have 06 4.8is, with nav DSP. Does anywone have any suggestions for upgrade

1.) BSW stage 1 speaker upgrade---is it worth it, how much difference or do you just try fit in JL speakers or something

2.) For Sub woofer---BSW or JL stealth box----or custom shallow box....alll same price installed roughly $1800 CAD except BSW slightly cheaper?

3.) Or custom stereo whole thing, JL shallow sub, JL mids, tweets, cleans sweep, JL amps.....But run risk of vehicle getting raped?

4.) Should I wait till warranty ends?

5.) Anyone,,,, I mean anyone in Canada, Alberta, even closer Calgary have any of thes upgrads I would love to hear it for myself????

IMO the factory DSP is like a 5 out of 10 and I want at least 8 9 out of 10. I do like heavy bass music ie hip hop...

SOrry to ask this again but any advice? Thank you so much