Problems getting decent color prints with Epson printer on MacOS 10.9 Mavericks

If you tried printer color management - then you go the best that printer driver software can do.
Double check all the settings, especially the paper type -- if you don't have the correct paper type selected in the printer driver, then it will use the wrong amount of ink and result in pretty horrible color.
And make sure you have Epson's latest driver installed -- they did have to make bug fixes for MacOS 10.9 (and more for MacOS 10.10).

I installed the latest driver
I also read a lengthy article Epson Professional Imaging - Color management
and read Photoshop CS6 - Color management by Ian Lyons

I changed settings to their recommendations.
I printed a test picture using printer management and one using Photoshop management. I could hardly see a difference and yes - the colour came out very good.
One thing I was doing wrong is I had the preview option on the wrong setting so what I was seeing on the screen was not what I was going to see printed.

One of them also suggested turning the brightness down a bit on the screen.
I changed settings in my color settings under files in PS.
I made a few other changes and I guess I found out what was wrong.........I took at least 2 hours to read the articles and make changes and test it.

I learned a lot - that's for sure.
I have tried to calibrate my monitor in the past using the calibration that comes with Macbooik Air - it just doesn't work for me.
It relies on my interpretation of what I see and I find it impossible to do it the way they have it set up.
I have a Spyder calibrator and I'll try to use that. But for now I just used the setting LCD color.