I prefer the sound of the first one to be honest! Also there is reverb on the examples so its abit hard to know.
Also, I think there was a bug mention in the sound on sound review about the phase of the oscillators, which could have an effect on the unison samples.
All in all, both sound like synths I would like to have and if one is 2000 Euro and the other is 200, I think I would go for the 8V.