No one can imagine what I went through to finally get my new helix head cutter installed in my new DeWalt 735 planer. Murphy's Law popped up so many times I lost count. The whole saga takes too long to tell, but here's the short version: uninstall--install--uninstall--reinstall--ship back to Amazon--receive replacement planer--uninstall--install. Add in stripped screws and special tools needed, and it took 6 weeks to get the job done. But I did it, and I now proclaim myself an expert on converting 735 planers from straight blade to helical cutters. If I get requests for details, I'll make a separate post on what I learned.
After a lot of research I purchased the helical cutter from FindBuyTool.com. Yes, they're a Chinese company, and I realized that risk going in. I relied on a recommendation from Casey in Hawaii, and my country boy logic told me 14 cutter inserts per row (X 4 = 56 inserts) would be better than 40 cutters on the Byrd shelical rotor.
Now, the review: the FBT helical cutter blows my mind with how well it performs. It delivers more than the manufacturer promises. It's quieter, by a lot, the wood surface is smoother (you can feel the difference and see it), and tear out on figured grain is significantly reduced if not eliminated. I consider the planed surfaces glue-ready right off the planer, and I wouldn't hesitate to apply paint without even sanding. Purchasing this cutter head is the best extra $ I ever spent in my shop.
I unequivocally recommend the FBT helical cutter, spending the extra $, and going through whatever hassles you encounter to swap out the heads.