Took GRE two times, same scores with minor differences - worth sending both?
I actually think that sending both tests would be detrimental for your application:


it decreases the ratio of signal to noise in your application
[opinion based] it shows the lack of improvement in your math and verbal scores over the year (which would be my interpretation if both results are sent) as opposed to your intent to show the will to improve
generally adds confusion


Since your most recent result is in all aspects better/equal (I don't count 153/154 to be different, while 6 on the essay is much better than 5) than the previous one, I strongly suggest sending only the newest GRE score.