Luxilon 4G isn't that great, the fact it retains it's tension better than other Luxilon strings doesn't mean much, it's more comfortable than other Luxilon, but also the spin help is worthless, it isn't anything special to me, I'd take Luxilon Original and Fluoro over 4G, I still take the Yonex Poly Tour Spin over all of these Luxilon strings, I would also take Yonex Poly Tour HS over any Luxilon.
Soon I'll be moving to multi or gut/poly if it gets really cold - below 50F with winds I can't use full poly.
2X YY 97T 310 with YY PTSPIN 47/43. ---Yonex PC Light, waiting for VCore TourG. Stan is the MAN.