Anyone using the Esoteric G-05 Master Clock, the Mutec REF10 SE120 or the Cybershaft OP21A

I am considering purchasing the Esoteric G-05 replacing my Esoteric G-03x for use with my Esoteric D3, P3 and wondering if anyone has used the G-05 and their experience with this master clock as well as anyones experience with the Mutec REF10 SE120 or the Cybershaft OP21A. I would be grateful for your input.