N.C.D. New Calculator Day - TI 89 Titaneum

[Ask Mait]

Hi,
My apologizes for pulling up this thread from the graveyard.
Wondering if somebody could compare the key-press feeling of TI-89 titanum compared to other TIs like 83+ and 84+
The reason is recently I tried my daughter's 83+ and find the keys and the large multi-line screen the best for my usage, so if the TI89 has the same key feeling, I would like to go in for that.
If it matters, let me tell that I've used Casio scientific for about 35 years (fx-82, fx-97, fx100, 991EX) and HP-35s for about 8 years.
Thanking you all in advance.