SS vs RTR...
Really depends on what you like/want to do. Do you want to open a box drop in some fuel and rip out? Then RTR...
or if you like wrenching and want to build the kit yourself then SS... I personally like RTR's because I usually don't have a lot of time on my hands and I like spending it driving and bashing rather than putting the kit together. However I can totally understand the pride that would come from assembling the SS kit. Also if you get the SS kit it has more options parts included and you can buy yourself a nice radio (if you dont have one already.)