02/28/10 Finally got 3 blazing speeds in one round (no boosts used)
My latest scores as of: 12/04/10 is now 892,900 (no boosts used) 05/12/10 is now 878,550 (no boosts used) 04/13/10 is now 796,050 (no boosts used) 11/25/09 is now 730,300 (before boosts) 11/18/09 is now 679,050 (before boosts) 11/06/09 is now 677,200 (before boosts) --Update--
100% Legit! My previous high score during the beta trial was roughly 580,000. I wanted to break 600,000 when the game came out, and two days after the game came out, Wham! Well over 600,000 points! I was also hoping to get my first 9x bonus, but I think that you aren't able to go past 8x. The two blazing speed modes throughout helped a lot, too.