LM Bangkok used to be a real favourite as well, but since I no longer live in East Asia I've been less often. Only disappointment about that hotel was the relatively small pool.
I've probably stayed at about 20 LM properties worldwide, and both LM Philadelphia and LM Minneapolis Chambers rank up there. Cool, yet comfortable vibe, solid staff, good breakfasts and quiet rooms. I love the outdoor courtyard area in Minneapolis (in the summer). Great place.