I haven’t found anything better than the Phantom; mainly for it’s versatility, with the option of being able to remove the arms a huge bonus in the warmer months (whenever they may be).
As for sending it back to Gore for repair or replacement: When I enquired about this, when my zip went, the period they were quoting for repair and/or replacement was too large (2 weeks) as I used it everyday and it was my only jacket.
In the end I found a cheapish Phantom II on Ebay (I think, may have been Amazon) and bought that instead.