After seeing how simple it is to transfer to kegs without air contact, I started doing it and would never go back. It definitely helps reduce cold side oxidation and improves beer longevity and stability. But that's for kegs.
If you're bottling and bottle conditioning, then the ability and the need to avoid air contact during packaging is lower. I could see that the OP's options are limited and any of the transfer tools should work. I have used that plastic siphon pump. But I have to admit that one of the happiest days of my brewing hobby was when I started kegging. Bottling sucks, but it's appropriate for long-lived beers.
Hopefully, no one is still transfering "to Secondary" anymore. That is one step that almost no brewer needs to do. But if you were, it would help to transfer without air contact.