1964 V6 or UM Miracle: Which is better?

I believe these two CIEMS have the same 'set-up'.  Is the Um Miracle worth the £150 extra?

Thank you. 

Staal, thanks for your input. I managed to demo the 1964 V6 and also the UM Merlin (unfortunately the Miracle was not available) I preferred the overall sound signature of the 1964 V6, but I couldn't get a very good seal with either.  I was told that the UM Miracle was 'better in every way' by the store manager.  Considering the extra £150 I wondered whether, generally, the UM Miracle is considered a better purchase. 

I listen to a wide variety of genres from Metal to Classical, so I'd ideally like a CIEM which can work across the full spectrum of genres.  If I were to lean to one though it would be rock music. I'll power the headphones with an iPod initially, but I'm keen to have a look at the Colorfly C3 as an alternative.  Seal is important to me, I've had my impressions done, so fingers crossed these fit well. I currently have some IE8's and Grado 225's I like the soundstage of the IE8'S but prefer the Grado sound overall.  Sorry that I cannot use any more technical jargon, I'm new to the complex world of CIEMS and I'm just hoping to make a good choice in the headphones I purchase. 

Cheers, 

Thanks Staal, yes, I was dubious, when he said 'the Miracle is just better.' 

I feel like I've read every review/opinion on the web, frankly, as you said, headphones will always be subjective, and I doubt I'd be disappointed with either. 

If anyone else owns either of these, I'd really appreciate any input you have on the criteria specified above. 

Thank you.