Simaudio Neo 400M vs. Parasound JC-1

I am interested in feedback on the Simaudio 400M monoblocks vs. the Parasound JC-1. The JC-1 is an older design that is very well known and loved. There is a lot less feedback on the 400M's (and Simaudio stuff in general), however, the few reviews I found said the 350P+400M sounds great.

I currently use a Simaudio 340i integrated amp with Monitor Audio PL300 speakers. I do like the 340i in general so I was thinking of a lateral move to the Simaudio 350P pre-amp in conjunction with the switch to monoblocks.

Any comments on the 400M's vs the JC1's ?

thanks

For reference,

http://www.simaudio.com/en/product/36-power-amplifier.html
https://www.parasound.com/halo/jc1.php