I didn't felt X2Toys were any bad, is only its cab wasn't as perfect as PE but neighter is DNA, but the rest were all better than PE.
In fact if the have any without head options to make the upgrade cheaper I will buy it as I don't need a prowl head nor a light up feature.
I saw PE-06 for $45 at one stage and was only thinking "is the cab worth $45" and that was the only thing I could think about.