To answer the latest question, TERRAIN TRACER is an option for TR96's, as was lateral tilt on the feeder house. Also hyd reel fore_aft is an option. These 3 options can be installed on the combine if not equipped. Some things to look for on a TR96 combine are rear axle king pins and bushings seized, rubber peeling off of smooth roll in NEW HOllAND chopper, shaker shoe hangers welded, replaced (can be an indication of a improperly timed shoe),cleaning fan drive shaft (eccentric shaft) worn out (can be updated to same as TR99 - not a big deal),bent H-frame, vibrating rotors, leaking rotor gearboxes, bent beater grate, bubble up auger drive should be updated to same as TR98, then will last forever, engine fan bearings and fan idler bearings, electronic stone trap working properly, cracked feeder house front drum, rear sidewalls of combine cracked_broken out (caused by an improperly balanced chopper),field light updates(not a big deal),return auger slip clutch bearing holder made heavier, thresher clutch bearings noisey. I am not trying to make these combines look bad, just simply pointing out some things to look for on them. TR96 through TR99 are probably the most efficient, reliable, overall best combines on the market. This statement is true if the combine has been properly, and regularly maintained (as is with ANY combine). The beauty of the TR combine is it's inability to throw grain out the back end, and yet produce such a excellent quality sample in the grain tank. I am not trying to praise these combines either, just stating my opinions.