Well, the first time I owned a Skyline was nearly 10 years ago and since then I've had the pleasure of experiencing the RB20, RB25, RB26 and RB28. I guess I could have tried going for an RB30 but my priorities have changed and I'm heading down a different path, one which does not include modifying cars.
I don't mind keeping the car, in fact I've toyed with the idea of spraying it blue again with the original bodykit etc and leaving it at my Perlis house or something along those lines. I guess it depends on what the car's market value is - if it's on the low side then I might as well keep it since I paid for car up front so its just yearly roadtax/insurance and periodic servicing.