The brewtus has dual boilers, pressure and temp controls doesnt it? Unless you like the extra bling factor of the giotto the brewtus would be the no brainer choice for me. I dont know that the brewtus would make a better brew, but its "tweakability" definitely appeals to my tech/geek side.
Is it possible to test the steaming ability of the brewtus from your retailer? That way you can determine if it can keep up with a small production line. Sounds like the only potential deal breaker to me.
Coming from a guy with 2 HX machines both of which Im very happy with.