How are openings that have been played for centuries? Yeah, pretty solid.
Opening Repertoire for Class C (Post 2)

nothings wrong with your original choice. Rember its not the opening its the player or better put anythings playable below a 2000 rating.

Against d4, I still think you'll get some good results with the Cambridge Springs variation of the Semi-Slav. At Class C level, some people won't realize their Bishop is hanging:
If you like playing Slav and semi open games like the french have a look at caro cann. It avoids trouble against 1. c4-e6 2. e4 (a nasty variation if you are not booked on it) or 1 c4 - c6 2. e4 (leading to a caro cann)
By combining the semi slav with Caro Cann you have a rock solid opening rep that works against everything including 1 c4, 1 Nf3 and 1 Nc3. Also plans that work in the semi slav often also work in the caro cann while french is a totaly different system of development
I was told that I was using openings that were too repetitive like KIA and weren't really appropriate for club level play. And I agree with that to a certain extent.
They told me to play 1.e4 or 1.d4 and respond with 1.e5 or 1.d5.
I've already played LOTS of 1.e4 and not much 1.d4 and the Queen's Gambit Accepted/Declined lines look interesting to me. Plus, I don't want to deal with the Sicilian that much althought it's not too big of a deal. I'm thinking about playing 1.d4 now, and get into some Queen's Gambit lines.
For responses, I'll respond to 1.d4 with 1.d5, and go into either the Slav or the Semi-Slav. The Semi-Slav looks slightly more appealing for some reason but I really don't know which one to go for. However I do NOT want to respond to 1.e4 with 1.e5. I've done that for a while already when I was a beginner, and I don't want to have to deal with all the crap White can throw at you like the Ruy Lopez, Scotch Game/Gambit, Italian Game, etc. I learned a bit about the French, mainly the Advance Variation. I played it out like two games. I really like it! It's not much about memorization, but more about understanding the opening. Also, opponents often don't play against the French correctly and I can often win a pawn or more. Also against the Exchange Varation, this guy on Youtube shows a great system he came up with so that the Exchange Variation is not so boring. It's called "Spicing of the Exchange French" (http://www.youtube.com/watch?v=uDoU8hWGVS4). It's also tactical so it will be good practice of my tactics.
So a review:
White:
1.d4 (Preferrably get into Queen's Gambit lines.)
Black:
1.e4 e6 (Lots of great play with the French.)
1.d4 d5 (Get into Semi-Slav/Slav. Please help me decide.)
How is this?