The SLL version is made to order according to your vin number and takes about 4-8 weeks to get. It will be "plug and play" so to speak but only replaces the four main harness components and average I believe $800 for all four harness'(dash, engine, front, rear).
The kwikwire is a universal wiring harness that is designed to work in most any application. It is less costly at $205 for a 8 circuit kit($239 for 14 circuit and $269 for 22 circuit) and wait time is none as they are normally in stock and ready to ship. These kits will give you more custom options however they do take longer to install.