There is no such thing as a "better BBS" unless one of the BBS shaves is obtained at the expense of a lot of irritation. If you are getting irritation-free BBS shaves with your current gear, you cannot and will not get a better shave with a straight razor or a shavette.I have read too many posts from people who do both and say the results are the same, which makes sense to me - how can I get a better BBS? What might a better BBS be?
It's just a different method of arriving at the same place, IMO.
My first open-blade shave was on December 30th of 2017 (a Feather kamisori shavette). I switched to old-fashioned straight razors in February of 2018, and shaved all the way though 2018 (every day) with a straight razor, and a month or two into 2019 before I got tired of the maintenance and went back to DEs and SEs. By August of 2019 I was missing my open-blade shaves, but didn't really want to go back to straight razor maintenance. That's when I remembered the Feather SS and borrowed one from a generous forum member (a folding one this time, because I figured after straight razor shaving for a long time it would feel more intuitive to me). After one shave I had decided to buy myself a folding Feather SS, and sent back the loaner.
My first shave with the folding Feather SS shavette was September 24th of 2019. Since then I have used it exclusively (with the exception of one travel shave).
I know I could go back to DE and SE and probably be fine and perhaps even satisfied, but at this point open-blade shaving has become what shaving is to me. I still use my DEs and SEs for clean-up of some difficult areas that I could probably learn how to do better if I lost the crutch, but I don't want to completely give up my DEs and SEs, so I am doing this hybrid way of shaving for now. Once I get to an entire year with the Feather SS as the main razor for every shave, I may start working a DE or an SE shave into the rotation once in a while. Maybe I'll settle in to a rotation that includes the SS but also uses my wonderful DEs and SEs for full shaves. I haven't decided yet. I think, at this point, that I wouldn't lose my shavette skills by doing so, since I have so many open-blade shaves under my belt now (probably over 500).
Who knows? The other direction I might go is pushing myself to learn to do even the most difficult places with the SS, in which case I could sell off the DEs and SEs and just use nothing but the SS.