Citron is my best deck and is the one that has taken my to rank 49.
Here is a brief writeup of that deck:
http://answers.ea.com/t5/Strategy-Discussion/Citrus-Beans/m-p/5726422#U5726422
I've actually removed the Bean Counter completely and upped Guacodile to 4. I also reduced the Sow magic Beans to 2 but they are often VIPs. Also, I made Pea-nut a core part of the strategy. Finally, I got rid of Doom Shroom.
Some wild cards I'm trying out in the deck are: Mayflower (great amphibious synergy and card advantage), Tough Beats (strong and hard to remove finisher), and Soul Patch (great for stopping aggro in their tracks).
Here is the deck in it's current incarnation:
4x Admiral Navy Bean
4x Sting Bean
3x Grave Buster
4x Jugger Nut
2x Sow Magic Beans
2x Water Chestnut
3x Pea-Nut
4x Rescue Radish
4x Guacodile
4x Navy Bean
4x Jumping Bean
1x Mayflower
1x Tough Beets
1x Soul Patch.