Thanks mate, much appreciated. We're still here and my building is still standing. I would have expected the taller the building, the more prone to shaking it is but such is not the case. In fact, from my experience (and most likely judging on when the building was actually built), the shorter ones suck a LOT more than the taller towers.
2004: Moved into my first place, a 2-floor house in Tama Plaza, Yokohama. A small M3-4 shook the FUCK out of that place. (Built in the 1970's)
2008: Moved to the 9th floor of a 10 floor apartment. Shook pretty good but less than the house. I wasn't at home during the 'big one' so I can't comment on how it felt but the aftershocks for days shoot the hell out of that places. (Built in the 1980's)
2010: Moved to the 7th floor of a 12-floor apartment - this fucker shook, rattled and rolled. (built in the late 80's)
2012: Moved to my latest incarnation of a studio/apartment mix. Currently on the 24th floor in a 32-floor building. Had several shakers, even that biggish one a couple weeks back (M7). Sadly I wasn't home for that one (was on a train that had already stopped) but out of all the quakes this year, I've only felt one. The only reason I could feel it is I was in a completely relaxed state, no movement, just sitting there vegging out while looking out across the city and rivers (can see two rivers from the window). Not terrible at all. (built in the early '00s)