1. Can you use the Blackberry for personal calls?
Probably just as well you didn't ask that at the interview. :laugh:
Yes, you can. Be smart about it and don't abuse it, but a few minutes here and there to call home is no issue at all. My personal Verizon phone sounds so much better, though, that I don't bother with the Blackberry once I get to the hotel. The BB isn't great as a phone, but it'll suffice when I'm working. (No point in carrying two phones around during the day.)
2. Assuming you supply your own headsets, is there any plane that is too loud for the Telex 750? (Like the EMB-145 I used to fly) Or do people use the Bose.
I used the Telex 750 for my initial training flight in the Excel, and
immediately ordered a Bose QuietComfort 2 and a
UFlyMike adapter for it. The air noise in the Excel can get very loud, particularly around 300 knots. You'll need to wear earplugs with the 750, then turn the volume up so much that you get a feedback squeal every time you turn your head. It's awful.
Even if I didn't need ANR, I'd want my own headset anyway because I don't really want splatters from somebody else's crew meal sitting 1/2" from my lips.

uke:
3. As far as the pay difference for aircraft >40,000 lbs. Is that all Falcon 2000's or just the EX/Easy?
Just the EX/Easy, the BBJ, and the large Gulfstreams. Neither of the first two are likely at all for a newhire, and the Gulfstreams are only possible after you've been at NJA for two years. So the up-to-40K payscales are the ones you should look at.
4. What is the difference between an Ultra and an Encore?
They're the same basic cabin as far as the passengers are concerned. Main differences are that the Encore has a hot wing (versus the Ultra's boots), trailing-link gear for softer landings, and the Honeywell FMZ-2000 FMS that's shared with several of our other aircraft, versus the less-capable GNS-XLS box in the Ultra. The Encore
Plus goes a step further, replacing the Honeywell avionics with the Collins Proline 21 system.