The ED A5s-300 is not really comparable to the other subs you listed. The ED subs which are in that class are the A3-300 and the A5-350. Another sub you might want to consider is the Outlaw Audio LFM-1 EX, which is mostly just a down-firing version of the VTF3.3. If what you want a sub for is 100% music, and not the extreme bass on a lot of electronic and hip hop music, I would go for the Rythmik. If the sub is for a mixture of music and movies, or some music that wants heavy duty output on bass, I would go for the VTF3.3 or the Outlaw Audio LFM.
The ED A5s-300 would be more fairly compared to the SVS SB12, the Rythmik f12, or the Epik Vanquish.