Something that everyone forgot to mention: don't relentlessly chase BBS. It's a bit overrated. What you should chase are better shaves overall. As you get better you'll probably start getting a few BBS shaves here and there--with less stress and irritation. Also, stop thinking in 90s: there's 360 degrees of approach angles out there, so it'd be a darn shame if you only tried four of 'em. Lastly, if you want a new razor, go for it. But understand that you almost certainly don't "need" it to get the job done.
Good luck and enjoy the RAD/SSAD/SBAD!
Good luck and enjoy the RAD/SSAD/SBAD!