It looks like you probably won't have the choice of a Q10 unless it comes from current stock. That I wouldn't necessarily recommend, even though I have loved my Q10 for 15 months (it keeps improving with each OS release), for one reason: double-typing. By most reports it affected the earliest devices like mine, but you don't necessarily know which batch you're going to get. In spite of the cloud of the keyboard fault, it has a beautiful silver lining: the Word Prediction on BlackBerry 10 is so far above anything on any other device, and that is why I still enjoy the Q10 so much. I mostly type one or two letters of each word (as I have in this sentence) and the rest is right at my fingertips. Nothing beats it.
If you enjoyed the legacy typing experience experience and the toolbelt, definitely hang on a little while for the Q20 /Classic.
If you can't wait that long because of your contract expiry, definitely consider the Z30. It also has the exceptional word prediction, and I can type almost as fast as on a physical keyboard, but offers so much more all around like killer sound and a great camera (yes, there are tricks!). I just finished a set of 1080p video interviews filmed in noisy locations day/night, and the audio and video quality is astounding even on a 60" screen.
Q10 ? The Other Crackberry Pirate ? Z30 | via CB10