*****Satisfied Customer HERE!!!*****
I found this forum yesterday. Actually, I found many. This is the one with all the happy customers. "Word of mouth" is a powerful thing.
I went to the prestige mod website
http://www.prestige-mods.com I bought a new Arcade Pre Mod(I already had a spare 150G drive). Also, a better chance of landing a Jasper if you get an Arcade.
Here is my experience:
I bought the xbox360 yesterday around 12:00 EST.
1) 1 hour later I had an email from Erick at Prestige Mods stating that my new 360 has modded and shipped.
2) The email comes with the backed up original firmware from the DVD drive. The email didn't have the file attachment for the firmware. I replied to the email stating that it was missing.
3) Minutes later Erick replied with the attached files and stated that for some reason it did not attach to the email. Meanwhile, I am getting an email from UPS saying that my delivery will arrive tomorrow October 14th.
4) I got my new 360 just about 1 hour ago. The 360 is a Jasper.

I installed a backup game on the hard drive and it works flawlessly.
Finally, I couldn't be happier. Everything came to me exactly as advertised. In the fastest possible time.