Hi Carlos - I'm like you. Sittin' on the fence and not so sure.

I won't stand to lose quite as much as you if I upgrade to the T3, but I expect that I would lose maybe $1000 to upgrade.
I haven't had the opportunity to see the T3 or play one, but the demos I have seen are impressive. Of course, hearing new styles is always impressive, and those SA2 voices are indeed a nice improvement.
In the end, I'd have to agree w/you....that the T2 still holds a lot of value. As a result, it's a difficult decision for sure. One that you will have to make based on carefully weighing what you are going to give up and what you are going to gain, and how much you will use the new features that T2 doesn't provide.
Best of luck w/your decision and keep us posted!
Randy