that whole t-850 saying is stupid,for one it never said in t3 he was an 850 series second wasnt arnies terminator a t-800 in t4 and looked more advanced than arnie did in t3? its all about the writers making the terminator bigger and stronger as the movies go on and as far as the t-1000 vs. tx goes,the t-1000 hands down,tx's plasma weapons arent that vicious for the 1000 he'll just keep reforming and plus you couldnt trap a t-1000 underneath a helecopter. and the tx wouldnt survive liquid nitrogen in my opinion,when the t-1000 got blown up with a grenade launcher and fell in moltein steel,it still took it awhile to die. the t2 movie was the longest one cause it took so long to kill the t-1000,but my favorite is T-800 they kick the most ass.