Depends on your distance from your local Ingram-Micro warehouse. My shipment from Onvia arrived within 48 hours of ordering. However, I have an I-M warehouse only 200 miles away from where I live. If you've ordered from Buy.Com before and the order came from a local I-M warehouse, you could use this as a guage to see how long your order would take to receive it. Onvia ships as quick as Buy.Com in my recent experiences.
I had to get an RMA from Onvia for one of my monitors. The replacement arrived within 24 hours of me placing the RMA request. Onvia is a great company.
I can't comment on the 900NF from Samsung. I've been happy with my 900P and utilized Onvia to purchase a 955DF. I had one 955DF replaced and I think I'm going to return the replacement also. The 955DF is quite clearly focused in the center of the screen, but the left 1/4 and right 1/4 of the screen isn't as good. On the left and right sides, there is a focus control that you access via the on-screen display to adjust. On both of mine, these areas were too grainy and when I utilized the focus control to perform the adjustment, I could eliminate the grainyness, but then both sides would be too fuzzy and out of focus. There doesn't appear to be a 'sweet spot' for the focus on the sides of this monitor. This really stinks because I feel that the monitor would have a lot of potential if these issues were permanently corrected by Samsung.
When you get your 900NF pay particular attention to the geometry of your images on the screen. Whenever I've owned a 'tron' - whether it be Trinitron, Sonictron or Diamondtron, the geometry always seemed to be a problem. On some these monitors, the issue worse than others. I wish I could get a 'tron' monitor with the near-perfect geometry of the shadow mask monitors.
Good luck with your 900NF!