sounds good... the torque is definitely what sets it apart from the 3.0si... and coming from your 535 which has more hp and is lighter, it's no wonder the 3.0si wouldn't measure up.
I think it's all about perspective. If she wants power for city driving, she would definitely not like the 3.0si with the low torque. If at the time of my order the 35d were available, I'd go for it too... but the 3.0si drives great except from stoplights so I'm satisfied.