hiya, I too am planning to give GMAT mid-December. Frankly, I just planned to prepare and give GMAT. I don;t want to wait another year, so why not now!!
I gave GMATPrep EXAM 1 and scored 610 - Q45(incomplete) & V28(with 20 minutes remaining)
Read some material and attempted the same exam again with may be one repeat question in Quant and Verbal
Scored 680 - Q45(this time complete) and V38(1 min remaining).
I tried another test - found after reading through forums, I had started overanalyzing sc questions. I ran overtime in Verbal and killed my score to 640.
My main issue is timing. Somehow that clock running back and question nos. decreasing does not work for me. Any of you got some tricks to help me?