Ive beaten F7's, Sabercat 700's, F6's, Switchback 800, ProX 700, Summit 700, RX-1, XCR 800, and 2 SrX 700's. All in 660ft races with timing tree. Ive also lost against F7's, a SC 700, Summit 700 and RX Warrior. All sleds considered stock.
If youre racing just for fun and dont have a timing light then the results arent true. The first 20ft is usually where the race is won or lost. If someone jumps even 1/4 second the results are completely messed up.
edit** These are all on my 06 M7.