First off, lemme direct you to two sites where by the time you hit 100 posts you'll be a cell phone junkie/guru. The first is:
www.howardforums.com
This site is probably the best forums site regarding cell phones. They have a forum for every phone manufacturer as well as every cell phone carrier. Second, because you are with sprint, I would recommend checking out this site:
www.sprintusers.com
Their forums are more active with sprint pcs customers. I have more trust for what's posted on howardforums than sprintusers, but that's simply because it's been around longer, and so many more people use it.
As was stated before, retention is your friend, call up customer service and ask for the retention department. You have to fake like you wanna cancel and see what incentives they offer you to say. Second, the new Sanyo MM7400 just came out, and that phone looks pretty slick, but in another 2 months the Sanyou MM5600 will be out, and this will replace Sprint's VM4500/5500 as their flagship phone. It'll have a QVGA screen among other things, and you can find out a lot more on the two forums I mentioned. Also, you might be able to get the direct number for retention on the sprintusers forums. Good Luck!
PS - just so you know what retention got me, my current SprintPCS plan (my vision plan includes unlimited SMS on both phones):
$85 2000 Anytime minutes
$0 Unlimited PCS-to-PCS
$5 7pm N&W
$5 Free & Clear America (allows free roaming onto other carriers like VZW)
$0 Vision Pictures Pack (web/data along with unlimited SMS)
$0 Readylink (Sprint's Push-to-Talk, I tried it out, ended up not using it so much, but it's included)
$4 Insurance (lost or damaged, phone gets replaced)
$0 2nd line
$5 Vision for 2nd
$4 Insurance for 2nd
-------------------------------
$108 Subtotal
$91.80 After 15% Business Discount (I get this for being a UC employee, my part time student job)
~$103 Total after taxes
My girlfriend and I split the bill and we have more minutes than we know what to do with.