I bought one of those 4-winged cheap ones which I planned to use but never did. The Whiteside is top of the line and out of reach. But the ones you cited are reasonable and replacement tips. I'll have to get one once I use up the other.I have several of those flattening bits like in your picture and they have done well. My last table I bought this bit and it left alot better finish, so that's alot less sanding in the end. Plus you can get 3 of these almost for that one.
https://a.co/d/bMzETML