Looking at your lineup...you have four really good bowling balls. The TNV can handle a bit more oil than the Angular One...depending upon the drilling of course, and the Fired Up handles the medium conditions quite well. To me the SR300 would be about the same as the Fired Up. I would suggest something like the Infinite One, Mean Machine, Hawg Zilla, something that can handle more oil than you currently have. And/or something beneath the Fired Up...a good light/medium bowling ball such as the Roto Grip Saturn. I've never considered the SR300 to be similar to the Paradigm. But, if you get a good price than maybe that would work. It is a good bowlng ball, a very good bowling ball.
Chuck