I havent been to fond of Kenwoods things.
I'm sure it's fine but I just don't like them as much.
As in regards to that Square Trade nonsense... I think it's kinda a scam warranty, but I havent actually used it. Just seems werid to me.
Those H/U's are a tid bit cheaper on ebay as well... but not really enough to justify the lack of warranty.
Clarion makes a pretty cool one. Its called the Clarion MAX675VDII.. you need the little navigation deal to have navigation however. Here's the link to that
http://www.clarion.com/us/en/product...294767543.html
There is also a listing on ebay right now for one for pretty cheap considering it lists at $1200 on Clarion's site.
Here's the Ebay Listing:
http://cgi.ebay.com/Clarion-MAX675VD...QQcmdZViewItem
Also you can try Alpines IVA-W205, but you will also need the PMD-B200 (which isnt currently out atm) to get navigation.
These can also be had on ebay for a considerably lower price. Around about $665 instead of Alpine's suggested price of $1000.
I perfer both of these units over the Kenwood tho personally, but its up to you.
Also almost forgot the Pioneer AVIC-Z2. Already has navigation inside but obviously costs more. Definatly worth it from what I hear, very nice unit.