I think the main thing most people here are overlooking is the OP's playing strength. He's rated 1700 in live chess here on Chess.com. Being in the US, that probably means a USCF rating somewhere in the 1300-1600 range.
At that level, knowing the opening better than your opponent is probably worth about one or two pawns in the positional evaluation. That's why unsound gambits are playable at that level.
That's also probably why he's trying to avoid main lines that his opponent presumably knows like the back of his hand. Telling him which main line is best, without him having a month or two to seriously study a whole book on that line, is just asking him to walk into his opponent's preparation and lose.
As an "e6 against everything" player myself, who uses e6 before f5 to avoid the anti-Dutch lines while happily playing the French against 1.e4, or on the very rare occasion it comes up from 1. d4, let me tell you what line I hate most: the French Exchange. From your 1. d4 move order, that's 1. d4 e6 2. e4 d5 3. exd5 exd5.
Most French players agree on this. This is theoretically the most boring and least advantageous line for white to play against the French. Looking at master level statistics, white probably scores worse than in any other line of the French, with a whole ton of draws, and close to even win/loss ratio. But at lower levels, it just bugs French players who don't get to play their favorite French lines when this is pulled out. I've seen quite a few comments online from people who said they actually gave up the French just because they were sick of seeing the Exchange.
So if you just want to bug your opponent, this is the line I recommend.
Wrathsss statement says the following.
I don't know where X_Player gets his stats but according to the chesstempo.com database on games rated 2200+, for his line:
4. Bg2 40.6%/37.4%/22%
Which shows white score is better.
Did you miss that these stats are better for Black? Scoring percent for White is 40.6 + (37.4/2) = 59.2% instead of 39.3 + (42.9/2) = 60.75. I trust you remember that White's wining percentage plus Black's winning percentage equals 100%.
I have to put this in the form of a question because the phrase "which shows white score is better" does not specify better then what, it is also missing a possessive.
Which shows white score is better.
^^^ The above statement was in comparision to black.
37.4/2 = 18.7
18.7 + 40.6 = 59.3% chance for white to win or draw.
Black chance for a win or draw are
100 - 59.3% = 40.7%
Which shows white still scores better than black.
59.3% > 40.7%
With a 18.6% difference which I believe is very substantial.