Hello there. Silver tip/super badgers can tend to be a bit floppy. I know nothing of the executive shaving brush, but I can highly recommend them and their products.
I guess it really depends on which products you use to shave with, super badger is ideal with creams or softer soaps, and your method of shaving, bowl or face. If you like harder soaps I’d highly recommend a 2 band badger, and at that price point you could purchase a Maseto from Classic Shop 2012 ( I think!) Ebay, or Yaqi from Ali Express. I must add that I don’t have either of these brands, but they are highly regarded.
If I was buying a new brush today as my one & only I would definitely go synthetic. Modern synthetic fibres are superb nowadays, perform excellently with all software, many would say that they produce a better lather quicker. They are incredible value for money, require no break in or maintenance. I’d highly recommend the RazorRock synths, or any of the new generation knots such as Tuxedo, Cashmere or Synbad from AP Shaveco in Canada.