LQ - mostly - I frequently start in PS, and decide to switch when I want to use txt abbreviations and it is too much work to make PS choose u instead of I... (ex: when r u coming home? ARGH!!)
I did just download .109, so I will need to see if I have the dexterity to work the PQ -it looks so small...
for emails and texts it's about 50/50 between ps and lq. i'll probably switch from portrait to landscape or vice versa at least once in the midst of a long message. for web content, exclusively use lq mainly because landscape mode renders pages and text bigger.
i was pretty quick with suretype on the 7130 and the pearl, of course it threw a fit if you needed to enter an odd word or abbrev. the qwerty keyboard on the 8820 was ok, but the curve has the best qwerty on a bb imo. on the storm being able to switch between ps and lq keboard on the fly just by rotating the device is nice.