I've been prescribed Mirtazapine now (used Paroxetine, Escilatopram and Venlaflaxine in the past). After intense googling I got scared I'll turn into a sugar-eating-constantly-sleepy zombie, but I see that those effects lessen during time.
 Anything specifically BPD related anybody who takes this might want to mention? All comments are welcome (except the hateful ones, I guess). Thanks.

edit (after a month, in case someone stumbles upon this post wondering about Mirtazapine): Mirtazapine helped. I was really zombie-ish the first few days while I was on 15mg, but after upping the dose to 30 I don't have any daytime sleepiness problems. I take my pill ~2hrs before bedtime and usually sleep well. It is the best antidepressant I have tried. I gained a tiny bit of weight but fuck it, I'd accept doubling my weight if that meant feeling better. I'm much more motivated and able to deal with problems. I still have bad days when I feel depressed but they aren't close to those dark suicidal ones I used to have. 