For people happy with the 1000 or 500, I mean no offense. My advice is to keep it and like it. It is way too easy to get sucked into high performance audio and devote way too much money to it.
Most people would probably think the 1000 is great. If you're used to a decent or good system, you'll realize it is crap.
Yeah, it gets loud, but there's more to audio than loud. I'm sure even the basic unit can get too loud to listen to.
I ordered a car with the basic system, but instead took delivery of a car that had the 1000. I can't believe I spent the money on this POS.
I had plans to put in about $4500 on a JL (amps/subs) /Focal (mids/tweets) /Kenwood (head unit) system but after taking the hit for the cost of the shaker I'm hesitating. I may try to live with this POS, but I'll probably end up ripping it all out. Right now I'm content with listening to the exhaust note.
If you listen to bass heavy music, the bass on the 1000 is bordering on acceptable, but stuff like hard rock has no impact, no sonic quality, no presence, no dynamic headroom, no.....well, you get the picture.