Suitable defence for 1.d4 I am a 1900 (approximately) and still get depressed every time my white opponent opens with 1.d4. I just don't seem to find my way with this opening. Currently i play nimzo and QID but both are quite heavy on theory and nimzo just gets very sad if white goes for Bd2. I prefer solid positions, for instance I really enjoy play caro-kann or french against 1.e4.. So what defence against 1.d4 you think I'd enjoy? Thanks.
Try the Dutch Stonewall. If you are a French player, you can play the move order 1. d4 e6. After 2. e4 you have a French, after 2. c4 f5 you are in a dutch, avoiding the staunton gambit (not a problem in its own, but if you prefer solid play ...)

After that, with a stonewall setup you have a solid middlegame, albeit a little passive

PS: I am 1900 too.