Yes, all BlackBerry devices have the same basic functionality. The biggest difference you'll have between those 2 devices is the smaller keyboard on the 7100t.

Some people love SureType, and some hate it. Personally, I love it and can type a lot faster - for 95% of the words I want to type. For words that are not in my 'Custom Dictionary', it can be a pain to type them the first time, but after that they are easy to type.