New Hair Color

I went in for highlights a couple weeks ago and ended up waaaay too blonde (as you can probably tell from my last post).  I went back to my hair stylist and asked him to make me a brunette.  After coming home a redhead, I decided to take matters into my own hands.  Thanks to a box of nine dollar hair color, I'm now a brunette again.  It's been years since my hair has been this dark and I'm not sure I like it.  So....I'd love some feedback (I've got thick skin - I can take it). Do I keep it this way or go for highlights again???