Last year I posted about the Vought, you can search for that if you want.
Basically the Vought is for a UK sub 12lb market only. The Remington name has been sold to an unknown, probably Chinese, entity. The Vought and the JTS Stealthhawk seem to be twins, like the M30b or c and the 250Z seem to be twins. Seems like I remember both Barra and JTS saying they aren't SPA snowpeak copies, but I'm not sure how that can be correct.
The 250z is available and probably your best bet. Real M30's are now pricey and seem to be sold only overseas. JTS never released the Stealthhawk. I heard FX sued or had issue with some other air around the barrel makers, even though the DRS came out around 5 years after the M30's. F FX, I hope that makes sense. So we are both up in the air if the Vought will ever leave the UK, but it looks like it won't.
If the Stealthhawk never makes it to market, and the funds somehow appear, I'll get the Barra, probably used, and try to shoot FT with it