Actual GMAT - 750 (Q-50, V-41)
GMATprep 2 - 710(48/40) 2 mths before GMAT
Kaplan 4 - 580
800score.com test 1 - 690 (46/39)
Manhattan GMAT free test - 700 (50/35)
Manhattan GMAT test 1 - 680(44/38)
800score.com - 720(42/46)
kaplan 3 - 590 (50/28)
cambridge - 660- 700(they give a range)
Manhattan GMAT test 2 - 670 (47/34)
kaplan 2 - 620 (50/31)
GMATprep 1 - 730(49/40) 1 week before GMAT.