If you are planning to stay with T Mobile the is the Pearl, the
Pearl Flip, the Curve and the Javelin. Best bet is to go into a
retail store and test them all to see which you like best. You
are really the only one who can make this call.
If you're sticking with T-Mobile and already like the full QWERTY keyboard you have on your 8700, then the 8900 or first gen Curve are your options.
If you're looking for a huge memory upgrade and processor, I don't see why the 8900 wouldn't suit you. When you test one out at a store, you'll be amazed at how fast the processor is compared to what you have now.
Posted from my CrackBerry at wapforums.crackberry.com
I say get the 8900. I love to text and use my messengers so the keyboard is great. This is my 1st BB and I love it. It has soo many great features. I think yo should check it out. And wi-fi connection is great. Esp cuz I have a tmobile hotspot modem.
Posted from my CrackBerry at wapforums.crackberry.com
If you are sticking with Tmobile, then your best choice is the 8900, it has a slick look, nice camera, wifi, and of course all the usual BB goodness. It lacks 3G, but with the wifi and a solid EDGE signal it shouldn't be too bad.
If you are willing to switch carriers, then your next 2 best options are the Bold (ATT) or the Storm (VZW). The Bold is a bit bulky, BUT with that comes wifi, 3G, a good camera (not as good as the 8900 or Storm), a GREAT screen and the faster processor currently in a BB. The Storm, you get "the network" (in most places VZW is best or at least good enough), touch screen, which is THE largest BB screen, 3G, and a GREAT camera. Word of caution the Storm is NOT for everyone as some just can't get used to not having a physical keyboard.