Difference between dunlop univibe and univibe stereo chorus

[chris2401]

hey guys.im about to buy the univibe pedal,i love the sound of this chorus/vibrato thing.i just wanna ask if you know what the difference is between the reissue of the dunlop univibe(http://www.youtube.com/watch?v=qIpRhl2ltYo , http://www.thomann.de/gr/dunlop_univ...moloeffekt.htm) and the univibe stereo chorus (http://www.thomann.de/gr/dunlop_univ...reo_chorus.htm , http://www.youtube.com/watch?v=969DyALZ_ls)

thanks!