Hello! I've been taking Effexor and actually really like it so far. I never really feel dulled, or tired like I was afraid I might. I'm just aware of when I'm having a moment where I would normally feel anxiety, and instead I don't and I'm able to react calmly. It's pretty pleasant!
Otherwise I've tried lorazepam occasionally when I've had trouble calming down (before I was on Effexor) and it's all right and I never had any side-effects from it. I also take clonazepam, which is intended for sleep, but if I have a bad anxiety day I take it before bed and it also really helps me feel calm, too. (And a little heavy as I start to fall asleep, but nothing unpleasant.)