It COMES with good fans. Great fans as a matter of fact. I don't see the rasa kit coming with decent fans at ALL. Not that I'm comparing the two (like every other water cooling elitist in this thread). The corsair fans are very well made, and well engineered.
The corsair fans can't be that great when people are talking about replacing them with fans that have a better noise and perfomance ratio.
I learned how to build PC's within the last ten months or so and I have my CPU and GPU's water cooled, so skill really isn't a factor. If you can build a PC then you can put together a water cooling system no problem. With these hydro kits reaching into custom water territory, it'd be silly not to atleast consider water when it offers plenty that sealed kits don't.