i've seen largely positive review of the x5 ? contradicted many of the flaws you outlined ?
these guns are made for a purpose: milsim woodsball. they can be extensively modified and have that realistic look to them. however what i did point out (minus the sarcasm of the van etc) isn't disputable, its simply fact.
these guns do not have a regulator to control the output pressure of the gun, which is a factor affecting accuracy.
having personally shot and taken this gun apart, take my word for it that what i said about maintenance, weight, consistency etc. is true.
hope this helps
oh and after reading the post above, everything i've mentioned is relative. they are not very difficult to take apart, but they are unnecessarily complicated compared to other guns.
same for everything else, its just that other guns out there do everything better