I have never used the 71xx, former 7290 now 8700 user. That said, I believe the 7105 is more phonish and the 7290 more BB with a full keboard. If you are looking for a phone with access to email then a 7105 would be better for you, but if you are looking for BB email with some phone capability, then a 7290 would be a better choice. I would suggest trying them both and see what feels better to you also.
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