mixed
Well I think you can get better for cheaper. For us on the TDR who like researching, posting, learning Banks may not be the first choice.
However most Banks kits do come with Gauges, K&N filter, etc. Comparing a $300 TST plate to a complete banks kit is not apples to apples. -- Even apples to apples you can to better if you spend the time to research, etc.
Banks goes provide a complete kit, with items that do work together. This is great for Camping World. For the retired guy that buys a RAM for towing his 5er, and needs more power, but does not want to research the pieces, wants a complete package installed, thats well designed, and does not require staring at the EGT gauge when towing up the pass Banks is great.
Now you can read this last statement as Banks does not have the power that you could get. Why put in a 230hp plate when you can install a 270hp plate in your 12v. Depends on whether you want to stare that the gauge when towing or whether you want worry free power. Meaning that Banks is great for the right market place and probably sells a lot too them. For TDR members in quest of high power, do-it-yourselfers, and people willing to research and learn mabye they are not the top market leaders.