Been using Oral B for many years, bought in a dentist office my dad went to. Hygienist I go to says year after year no plaque. She asked what I use, and she seemed a little surprised I didn't say Sonicare. Said she is now impressed with Oral B.
Oral B is made in Germany by Braun. Sonicare is made in China. If I didn't know any better and was in store and trying to make up my mind, I would buy Oral B over Sonicare in heartbeat for that very reason.