Re: Chassis Systems.....
We don't do a tube style stock, however I can say that Scott Mcree is a really good guy and is probably second only to Mark Larue in support of military folks. If he didn't answer his phone or email I assure you there was good reason. Having said that, his isn't a tube style either.
Really you could say that the only true tube guns are the Eliseo (there's another one like it I think) and the MDT. Those are the ones that like Mike said, have the handguard, action, and "buffer tube" all inline.
As for what looks better, it is so subjective that for every single stock or chassis available, there's a group who think it's better looking than all the others and a group that thinks it's awful looking.
Justin