The Escher Khimerix Is A Fantastic Brute 

Nice overview as usual:) Personally I am not a fan of the Kymerix's official model, but it is easy enough to find an 3D printable or kit-bash your own xenos monster. Regardless, its rules are pretty nice and I would say you always take the Razor talons upgrade (+1S, -1 AP and +1 Damage for just 30 creds is a bargain), while the Gasseus breath upgrade for me comes down to wether your arbitrator lets you use Chem alchemy Gas cocktails on it (if Yes, give it Liftin and Blaze to spit the flamer template 6'' further and set enemies on fire, otherwise I'd skip it). Cheers!

But the real question is, can It dig better then an ambot?