Phase Tech P-1G vs ZYX Omega Mc carts

I guess, this will be not easy, Omega is very new and Phase Tech very rare. The Zyx UNIverse made the line famous, really good cartridge, but who knows, what will go on (in reality, not from rebranding and raising prices). But you will find a good deal anyway, when you don't buy it in USA. ZYX omega retails in japan for 400,000 yen (about $4,500?), and you can probably get some discount in japan too.. probably even cheaper in HK (the Phase Tech cartridge is about is about $3,500 new)?.