I've never personally worked with John Wood, but have done tuning for his transmission and have not had any complaints. Our customers that run JW have been extremely happy with the results.
I do like BTS transmissions and have worked very closely with Brian and Cale over the last 10 years. Their transmissions have proven themselves time and time again, and their warranty is about as good as you'll find anywhere in the industry.
It's going to come down to who you really have a good relationship with. Give 'em both a call and see who you are most comfortable with. In the end, that's what you're really paying for as the quality from both will be pretty comparable.
Good luck with your decision.
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Bill Cohron - The Mad Doctor  
Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997!
(678) 890-1110
www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar!
Bring back  Windows™ XP and 7. 
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Windows™ 10 is only slightly less annoying! 
Windows™ 11 is garbage! 
Much to my surprise, I'm actually quite enjoying Linux! 
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