I drive a 95 xj6. its part of the x300 series. Apart from the spareparts being really expensive, its and extremely reliable car. Actually i would say never mind the sparreparts, because you rarely need them.
For me the x300 was the last good looking jaguar. They were built with ford quality control, but they werent just disguised ford mondeos. They are widely regarded as the best jags out there. Their engines have a run in period of 90.000 km, so they are built to last.
I dont really like how the moderne jags look, so i would recomend a 95-99 x300. If you can get a xjr, thats even more fun.
this one is mine