I'm not sure about the latest sony subs because i haven't been into car audio for a year or so, but in general sony lick donkey balls in any area of car audio, with the exception of decks because every deck is pretty much the same no matter what brand.
Umm. No.
The deck is the heart of the system. I GUARANTEE that if you had a $5000 system hooked up to a sony deck and tuned it as best you could it would sound ok. If you then got, say... and eplise or alpine deck and tuned it as best you could it would sound at least 2-5 times better.
Skimping on a deck is something people do far too often, including me. I've learnt now that if you want to build a great system, outlay heaps on the deck and build gradually from there.
I do, however, agree that sony stuff is pretty much all poo poo. Most people who disagree
A) haven't heard a decent sytem that's set up right
B) are cheapasses that want to believe sony's teh wikkedzor
C) are disillusioned by the success and quality of sony Hi-Fi (sony Hi-Fi good, sony car stereo bad)
D) work at, or have been talking to salespersons from Strathfeild, Audiocom, Supercheap etc. (no offence)
Go to a local albert's car audio or the like that don't just sell sony and pioneer and have a listen or get them to sort you out.