I like H4895 because I have been convinced it is the better choice for reduced loads when I want to go that way.

I have no application for 4198 of either type.

4350, which ever is on the shelf when I am buying. Yes, different data.

4831, I switch back and forth depending on application. If I can not get enough H4831 into the case to reach velocity, then I switch to IMR 4831.

For example 30-06 with LC 67 brass. 63 gr H 4831 works with a 165 gr ballistic tip. But when I switched to the 190 gr Hornady spbt, there was too much compression with H4831. But I could seat the bullet over a full charge of IMR 4831.

People who choose to brew up their own storms bitch loudest about the rain.