Meds for me haven't taken away all the symptoms, but my highs aren't as high and my lows aren't as low. My experience with meds is initially I was over medicated - this was necessary because of my mental state at the time (I was found attempting and was hospitalized where I was diagnosed). Since May 2010 I've been on a good med combo and I also live a healthy life (eating properly, exercising, no alcohol etc.)
Bottom line is what goes up must come down and often after a high the depression kicks it. I no longer like the highs and have never liked the depression. Stability is better than any high.
My suggestion would be to start tracking your moods. I use this one online:
http://www.medhelp.org/land/mood-tracker