It all depends on what your specific "Mission" is with your rifle....
If you mostly plan to shoot at prairie dogs out at 100+ yards or precision accuracy is your priority, then the lower height mount will suit you better.
If you value more of a "Heads up" field of view which is more conducive to CQB and medium range, multiple rapid engagements, then I feel the higher mount will suit you better.
I run the 1.93" height LaRue Tactical LT-135 mount with my TR24G, and I am completely satisfied with the set-up. I also run my Surefire X300 weaponlight in the 12 o'clock position and the higher mount places the light very low and un-obstructing to my sight picture. I think I would actually prefer something in the 1.75-1.80" height as the 1.93" height is pushing the envelope ever-so-slightly with a variable power scope. But it has not been an issue thus far (Over 1 full year with the combo).
The higher mount really shines on 1x at CQB distances/drills.
Last edited by nickdrak; 08-26-10 at 20:31