Tmobile MyTouch 3G Slide vs LG Optimus T

Hi, so I am a new member and this is my first post. I am due for a new contract with tmobile this summer and am going to get my first android phone. I've been through a lot of details and I have come up with a tie between two different phones; the Tmobile MyTouch 3G Slide and the LG Optimus T. What I am looking for between these two phones is: Android 2.2 (froyo) or higher, long battery life, more overall memory (such as including a micro SD and stuff), a RAM of at least 200 MB, good web browsing, customization, and an overall great phone to have at all times. I checked places on the web where I can do side by side comparisons but I want some real feedback from people who have had one or both phones that can share the pros and cons of each. So, based on my preferences, please pick the phone you think is better for me. Thanks in advance for the tips and advice!

1 thing I like about the MyTouch 3G Slide is it's slide out QWERTY keyboard.
1 thing I like about the LG Optimus T is it's physical buttons.

Right now I'm leaning towards the mytouch because of it's keyboard, design (buttons, layout, etc.), and customizability. And since it's camera having a flash is a pretty good deal too.

 

When I said battery life I meant like standby time and talk time. Both phones have different and one of them has more than the other. Sorry I wasn't clear. I am asking which phone has more talk time per charge