Upgrade1394 - I obviously don't agree with you that the 7 sounds harsh and a bit metallic, as I don't think the 5s sound that way either. But as to the 8 vs. 7 or the 8 vs. the Sasha, I think you may be correct in your assessment that they are closer to the Sasha and may have had a short life for the reasons you indicate. Though I have not listened to either enough to offer my comment - both models are above what I am willing to pay and also above the OPs budget.
As to what the Wilson dealers say, I would be very careful about listening too closely to those comments. For the most part they carry the Wilson marketing and reasoning script. I don't necessarily fault them for this, but just beware it is hard to find a dealer (of any brand) who will tell you that you are better off going out and buying used equipment of a prior generation vs. the current model of the same brand - which they carry.
As to what the Wilson dealers say, I would be very careful about listening too closely to those comments. For the most part they carry the Wilson marketing and reasoning script. I don't necessarily fault them for this, but just beware it is hard to find a dealer (of any brand) who will tell you that you are better off going out and buying used equipment of a prior generation vs. the current model of the same brand - which they carry.