1..g5 is a solid choice for black, as it prepares development of the dark squared bishop and squeeze control of f4 immediately.
A good solid defence against 1.d4

Queen's gambit declined.
For something more system-like then the english defense or old indian type.

I also use the French against 1.e4, ML.
Against 1.d4, I use the King's Indian Defense (KID).
Good luck in your search for a defense that suits you~
Edward
http://www.chess.com/chessopedia/view/kings-indian-defense
Solid: QGD or Queen's Indian/Nimzo.
You can play 1.d4 e6 and get a lot of french games from 1.d4, too.

It seems like you prefer positional openings such as QGD or Ruy Lopez instead of tactical positions such as Sicilian or King's Indian Defence. Therefore I would recommend playing the Tartakower variation as it is has a long lasting reputation of being hard to break- apart from the Famous game from Fischer-Spassky 1972 of course. Also maybe looking at some Slav lines would add some spice to your variations and avoid a monotonous repertoire.

KID is similiar to the French in that both tend to lead to closed positions. A lot of players pair these two defenses, so you would not be the first.
KID is similiar to the French in that both tend to lead to closed positions. A lot of players pair these two defenses, so you would not be the first.
Most players are reluctant to call the KID solid, though.

I used to have your repertoire. The Kings Indian Defense falls in line with the group of openings you already have.

1..e5 isn't a positional opening. I'm calling it that isntead of the Ruy Lopez because that's the proper name, but yeah it leads to some of the most tactical positions in chess, as well as some of the dullest. !..e5 is a minefield for ideas and even yours truly started playing it recently for fun.

There's not a lot of theory to the Dutch, so if you don't mind a little breeziness on your kingside you could try that.
Plus it synergizes with the French. You can play 1.d4 e6 to get to the Dutch, avoid some weird anti-Dutch lines, and make things trickier for miscellaneous queen pawn openings.
There are also three flavors to the Dutch that you can use for change-ups.

yeah i'm going to go with the QGD. I find it fits with my style of play. I esp like the lasker and Tartakower variation.

You can play 1... e6, many white players follow up with 2. e4, and you get a french, and if 2. c4 then ...d5 QGD or Nf6 for a nimzo or QID or even benoni.

yeah i'm going to go with the QGD. I find it fits with my style of play. I esp like the lasker and Tartakower variation.
John Cox's "Declining the Queen's Gambit" teaches the black side of both those variations, plus provides a defense to the Catalan.
The French / QGD Tarkatower is my black repertoire for the most part. I own the Everyman electronic versions of John Watson's Play the French 4th and John Cox's Declining the Queen's Gambit, and slowly loop through them again and again on my phone using the Everyman app. I find using electronic versions is much quicker and practical than books. I also have copies on my laptop with Fritz 13 and sometimes go through the lines of these books while infinite analysis is running.
Hi chess.com community,
I've been a chess player for well over 10 years now and i've yet to fix an opening against 1.d4.
I'm soon to become a father and thus I won't have much time to study openings.
I use the french defence against 1.e4 (based on the excellent chessbase DVD by Ari Ziegler ) and use the London system to play as White.
Any practical recommendations? (Please no gambit lines, I"ve tried budapest and albin's countergambit and they all felt a little unsound after months of use)
Cheers.