Pantech Matrix Pro (AT&T)

Pros: The dual slider is pretty neat.
Good battery life with my level of usage.

Cons: I came from a Blackjack 2 with the keyboard on the front, and I felt like the Matrix Pro's keyboard was cramped and I had a difficult time using it in comparison to a keyboard on the front. Also, many times the phone would eat texts and phone calls.

Summary: The phone is bulky and an awkward size. If you're coming a Blackberry-style phone, chances are you'll agree with the keyboard feeling awkward as well. Also, it is very difficult, if not impossible, to type using one hand with this phone, something I did often on my previous phone.
It took me four months to get my symbol functionality working. Following the directions got me nowhere and I figured out what to do by complete accident, which was not the way to get to the symbols outlined in the phone's instructions.
While my battery life was excellent during my use of this phone, I don't keep apps running, don't talk too much, and am not a rabid texter. However, the battery suddenly took a nose dive, going from fully charged to dead within a 9-10 hour span with no use. It also ate at least three phone calls and two texts during that span. I run a small business on the side and this is unacceptable.
I use my alarm function quite often, and just didn't like the way it worked on this phone.
The phone gets hot quite easily with phone calls as short as 20 minutes.
All in all, I am just not happy with this phone. I will likely not ever choose a phone in this style again and probably never another Pantech brand phone. After trying a lot of the major brands over the years, I just find myself being attracted to Samsung phones. Honestly, the only reason I have this phone is because it was the insurance replacement for my BlackJack 2, and I had no choice in the matter. I would not have chosen it then, and I certainly would not choose it now.