Should I switch from Razr to a870?

I just bought a Razr V3M, which I like well enough in certain ways -- it's slimness (LOVE that aspect), it's sturdy feeling, its sleek design, working well with bluetooth, call quality, it's big keypad, etc. -- but am tempted to trade it in for a Samsung A870. I care nothing about music or video or camera or ringtones or text messaging or any of that jazz. I just want to use the phone feature (and sometimes the alarm clock) and with a bluetooth headset.

The reason I would make the trade is for the following reasons:

1. A vibrate then ring option -- I THINK the Samsung has this feature. Right?

2. A stronger vibrate. The Razr's isn't that great.

3. Hopefully better battery life than the Razr.

4. Hopefully larger font size so I can more easily see things like message indicators and phone book entries and the time and date, etc.

5. Tri-mode. (Not crucial, but hey, it seems better to have it just in case then not to have it.)

Anyone have any opinions or experiences with the strengths and weaknesses of these two phones and which one is better? What am I taking for granted with the Razr that I'm going to miss if I make the switch? What unpleasant surprise might I find with the Samsung? And so on.

I'm all ears, folks.