There is no “bothering” people here on this forum. Asking questions will generally yield some good advice, discussions, and different points of view.

I have owned firearms in both calibers and I hands down prefer the .450 NE. I can’t say one is more available than the other but for a handloader, .458” bullets are far more common and available in many different weights and configurations.

Recoil should generally be expected to be somewhat heavier with the 450 NE, but when I think back to my Ruger #1 in 450-400, I am REALLY glad I sold that nasty kick the shit out of you rifle. I find all the bigger rifles will have stiff recoil but rifle weight, design, and ultimately “fit” will dictate how well you can tolerate the recoil.

For me, my upper limit in recoil tolerance is decidedly the .500 NE. Hunting with it, I dont notice the recoil, but range sessions tend to be very limited. I find the 450 tolerable and similar to the Lott.