Hey how is it going?
I am in the same boat as you! I currently have a MY98 WRX that i am trying to sell to get back into the seat of a skyline. Don't get me wrong the WRX is an awesome car but i understand what you mean when you said "I have a 2000 wrx and Its not really me"
Having owned both cars i find that there similarities are few, about the only one that comes to mind is they are both quick and similar priced. At this stage i would like to add that what i say is based on my own personal experience. Differences include the smoothness of the skyline to drive over the WRX, Skyline is RWD, WRX is AWD and therefore the way the car can be driven in different circumstances changes, the list goes on.
For me it bubbled down to - Skyline is RWD and therefor more fun to drive, it is smoother and looks better.
I would deffinately recommend the swap! (obviously depending of the condition of the skyline)