Some things a man just needs to decide for himself, like what car to buy, what house to buy, what girl to marry, and where to ask for such advice about which headphones to buy.
This seems more like a Head-Fi question. That's the kind of place where you can get at least 100 people to give you bad advice. Of course, none of them will have heard all of the headphones in question, let alone have any real appreciation for your system (source, amp), sonic preferences, or the realities of your budget constraints.
This is the kind of place where we're more interested in scotch, watches, bikes, photography, and all sorts of other things unrelated to headphones, because we've all learned that you either need to hear them with your own two ears within your own system, and then decide for yourself whether they're a good match with your sonic preferences and fit within your budget or just forget about them and invest in a high quality blow up doll instead, which is likely to give you more satisfaction than the mental masturbation you will otherwise be doing about them until you hear them for yourself.
If $700 is a good price, and you won't desperately need that money soon, and these headphones are something you're interested in trying, then why not buy them to try them? If you don't like them, chances are you can sell them quickly (for $700 or something quite near to that amount). Nothing (or not much) lost. If you do like them, then you can sell the other ones that you don't like as much and repay yourself that way and maybe have enough left over for a decent quality (but not top of the line) blow up doll. We can probably give you some decent advice in terms of your options in that regard, actually.