How does the Aguilar DB359 compare to the Ampeg SVT Pro II and Mesa 400+ . I am getting one of one of these three, but no one carries Aguilar around me and my Mesa dealer dosen't stock the 400+. I have played the Ampeg Pro II and the reissue Classic SVT. Also what is the difference between the new reissue (all tube) SVT and the Original. Any help would be greatly appreciated.