Whether or not to go with a Gen III should depend upon how much off/back roading you intend to do. The Gen III are NOT the rugged body-on-frame of the Gen I and Gen IIs.
A good discussion was previously posted--
http://www.4x4wire.com/forums/showflat.php?Number=1201309

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90 LWB RS: 3 L/mt, JBaker springs, bushings, swaybars. KYB shocks tweaked, 134k mi, original owner.
97 LWB SR: SOLD Sep. 2014 131,006 mi: running boards removed, BFG 31x10.5 AT/KO tires, Air locker, AirLifts, KYB shocks, Cibie fogs, 3rd owner.