Summary: I had KVT-516 stolen and I bought this one to replace it and have had no complaints. Both are great stereo's only downfall is there isn't really an anti-theft factor; i.e. no detachable face or such. I now park in the garage to deter theft but love all the options.
Summary: I bought this headunit because I have one in my show truck along with kenwood screens. I had a dvd headunit in my van that was terrible and would not play if the temp got in the 40's, this unit plays at any temp and into the negative temps with no problems. Kenwood is a great brand. It doesn't come with a remote, which I don't understand, so you have to buy it separate. One remote works for both vehicles though.
Summary: It is an excellent unit. HOWEVER, I the downside is that you CANNOT watch videos off the USB flash drive. It has to be on a DVD. Also, it takes about 40-50 seconds for the unit to turn on and play once you start up the car. Other than that, it is sleek looking and very nice. I got the add-on GPS but haven't install in it yet but I am positively sure that it will be great.