"best spec"? the TJ Sahara model has the most content (standard equipment and available options), but the Rubicon TJ has a more stout driveline (axles, xfer case) and larger wheels/tires (16"/31") as standard equipment.
so, it depends on your view of "best spec".
2002 Wrangler Sahara, all stock, 5-speed, Dana 44, duel tan tops, 2nd owner.
2008 Hemi Grand Cherokee Limited 4X4, Quadradrive II, original owner, 22,000 miles.