I ordered my X30 Mid about a week ago, and it shipped within 2 days. I too had looked at a bunch of different systems before settling on the X30. I really liked the e800, but decided the screen wasn't worth the price for my needs. I hadn't looked too hard at the a620.
As to a modem, I also plan to get a modem for my X30, but I'll be getting a Socket Bluetooth modem since the X30 has built in BT. Since my use for a modem would be in hotel rooms, I can lay on the bed or sit in a chair, and not have to be tied to the phone like I was with my previous hardline modem.