Calling All Ex - Shindo Preamp Owners

Hello,

I am currently using and enjoying my Shindo Masseto preamp, but there is always an eye to see what else is out there. Terribly promiscuous, I know. To be clear, I am not trying in any way to disparage Shindo preamps (they are great), but was  curious whether there are any ex-Shindo preamp owners out here - I would love to get some insight into what convinced you to move on and to which other brand(s) you moved on to (and why). Thank you!