I'm not a skyline fanboi, because mines & tommyk did a line of Toyotas, Mitsubishis, Suzuki's, own-builds (lookup Zz1 & Zz2). These cars were the pinnacle of non-standard perfection.
All I'm suggesting is a brief period of ownership of an illustrious tuner-built car that would provide more in respect of experience & bragging rights than an M3, Porsche GT or other mass produced sports car will.
Its your money man, only reason I didn't buy a TK zz2 or Mines built car is because the 380 came up first. :-)
Happy hunting