I'll offer up the same advise I gave my son when he was looking for a bar for his Colorado.
Research which manufacturer has done the long yards in R&D for airbag compatibility, frontal protection and manufacture.
If you are going the scrub bar/side step option, also look at who has done the R&D on side impact airbag compatibility (as there are very few) and if you fit Joe Blow's Chinese backyard built side steps, your vehicle will NOT be covered by your insurer in a side impact if the OME steps are removed and non compliant steps added (This is first hand info) or worse still, the side airbags fail to deploy.
Yes the cheapies are direct copies of the R&D designed bars, but built to a lesser standard and 9 times outta 10 with lesser quality materials and finishes and the price reflects this..........
In the end it's your own decision however, but a point to consider, is that $3k bar has had $2k of R&D to ensure the compatibility of your vehicle's standard safety fitments.