If you had every one of those distributors torn down to reveal specs and part numbers you’d likely find they were all the same.
I read a test years ago between the Msd and skip white and they were exactly the same except the Msd was 300 at the time and the skip white was 40 bucks.
You want the best and don’t sweat the price then get one here.
http://performancedistributors.com/
Do you have a spec sheet on your 350?