Don’t think being stocked in halfords has affected anything – halfords don’t have any say in the spec like they do with voodoo/saracen/gt. Spec on the lower end ones is atrocious for the price though, don’t know why anyone would buy one unless on serious clearance.
The geo is pretty nasty on most of them as well, short tt and long seat tube. Maybe thats personal preference to a point. The one saving grace for me was the stab supreme, really really long with a nice short seat tube. Spot on for a lanky guy such as myself, I can have a long bike but keep the standover and sexy looks of a small!