My thoughts...
Yes, rotary is better... (the circular rotating blades)
I once bought my DH a Braun (they are all the blade that vibrates side-to-side) The Braun is a good razor, but it is much louder, and the thing will vibrate your hand off!!!
Yes, Norelco has always been the best... (key word - BEEN)
My FIL and my DH have never used anything else.
However, a caveat... Norelco is now Philips... I hope that maybe the top of the line razors are still the best.... but they make some low-priced trash...
My husband bought one last year, it didn't work worth a darn.. took it back... He checked the reviews online, and found out that model has a lot of bad reviews. (This model runs less than $100.00 at most any store like
Walmart.. it is the one that says larger shaving area - therefore faster shave... It didn't work at all...)
The one he has works fine, but is not as powerful, and the rechargable battery doesn't last as long as compared to the old true Norelco that was only like $30.00 when he bought it years ago.
Bottom line, unless anybody else has more input... If you want a good electric razor, you may want to shell out some money for one of the better models.