I'm one of the LE buyers that is loving their game and not posting much because I'm playing it all the time. I have not had a single issue out of the box - no chipping/pooling, shots are all make-able, T-rex head works great. I am sorry to hear about others that have had less luck.
The T-rex head is, in my opinion, the best mech/toy Stern has ever made. I'm struggling to find one that would be in the same league and would be curious if anyone can think of one.
The raptor cage on Premium/LE makes a big difference in gameplay because the multiball actually becomes something I now go for in every game, whereas on the pro it is more dangerous in my opinion (it is a less predictable shot on the pro, and in the Premium/LE it is easier to bash the gate and get reliable hits once the ball is locked in the cage).