I found an article in Conmuser Reports November '04 that rate 22 "light truck tires". They weigh and value criteria that includes: dry braking, wet braking handling, handling, hydoplaning rolling resistance, snow traction, ice braking, ride, and noise. Their top 5 were Goodyear Fortera HL Ed., Pirelli Scorpion STR A, Hankook DynaPro AS RHO3, Kelly Safari Sig., Dayton Timberline HT.
Michelin' s ratings were XC LT4 (Sears) #15, LTX M/S #17 and Cross Terrain #19. Toyo Open Counrty M410 was #10 and Yokohama Geolander H/T-s G051 was #18.
Based on Consumer Reports, the opioions of Lexus Owners Club members and other information it looks like Cross Terrains for me.