I am 300 miles into a '13 Hatch with the stock audio and am looking to upgrade it to a modest, but decent sounding set up. In terms of constraints, I am not willing to sacrifice hatch space for a subwoofer and I'd prefer not to spend unnecessarily - I probably wouldn't be able to appreciate/identify audiophile-level quality, but I definitely don't wan't to live with the stock set-up. Here is what I am thinking (from reading it sounds like others have gone a similar route) and I'd appreciate feedback on whether I am making sense or not.
Upgrade 1: Pick up a new head unit (likely with Nav) and add Axxcess for hands-free + a back-up camera. I'll likely go the Kenwood route as I can call in a favor from a pal on it.
Upgrade 2: Pick up an underseat sub (Kicker, Sound Ordnance, etc.). I recognize that these don't compare to a proper sub, but I hope it will be better than going without (and improve the door speakers by alleviating them of low frequencies).
Not planned, but I could be talked into it: Sounds like the stock speakers are decent and could be left alone running off a new head unit. Would it be worth it to add a small 4 channel amp to put 40 watts RMS to them? If yes, does the extra power mean I am going need to add sound deadener? Finally, if I am going to these lengths, should I just get aftermarket speakers for the doors?
If I can get a decent, balanced sound from doing only upgrades 1 & 2 above, I'd be thrilled. Again, don't need high-end sound, just good sound at reasonable volumes. Thanks.