You'll find with deadlifts your weights will go up quickley, last year I would max out at 315lbs X 5 and now I hit 495lbs X 5 on a weekly basis. Best back builder out there, once you feel your form is tight then start loading on the heavy weights.
Yeah i feel quie confident with them... that's why i decided to try the 225... and it felt easy! Oh man the tightness in my back after. I barely had enough strength for my lat pulldowns!