Samsung Jack (AT&T)

Pros: Size; improved keyboard; improved overall responsiveness; design; upgradeable to 6.5

Cons: Not really its fault, but WM 6.5 not available just yet

Summary: I've been an avid BJ2 user for the past couple of years. I've been to the iPhone, Curve, but the BJ2 always stood out as the business users phone of choice with excellent battery life, clean piano black design, plentiful RAM, and a real QWERTY keyboard in this touch screen obsessed age.

The new Samsung Jack improves on the BJ2 with even more RAM (no worrying about running out of memory while multi-tasking), better camera (Propel Pro-like), superior responsiveness, and a much better keyboard.

It was weird how with the BJ2, when texting, it wouldn't instantly register your key presses. No more of these concerns with the Jack.

I absolutely love this phone and finally MS partner Samsung got it right. I won't be giving this one up for a while now. I just hope battery life is decent with 3G.

Updated on May 28, 2009

One week worth of use update:
I don't have a lifestyle where I can simply plug in someplace in the middle of the day to ensure I have sufficient battery life while out and about at midnight. My settings are simple: 1) Exchange ActiveSync set on as items arrive; 2) Windows Live set on as items arrive; 3) some internet use to check up on my news sites like NYTimes.com; and 4) maybe 30 minutes worth of call time.
The next step to help the phone meet my battery life expectations is to set ActiveSync to every X minutes and do the same for my Windows Live mail for hotmail.
My complaint about battery life is not specific to the Jack; rather, it's a call for a need for better battery technology or more efficient, less power hungry radio on phones. Overall, I love the Jack, I think Windows Mobile did a kick !@#$#! job with the sliding panel display (Blackberry OS is clunky in comparison) and not sure I even need/want 6.5!