Thank you, David. As good or slightly better... It sounds like any improvement would be minor.
I think I understand what you are saying about 2" barlows: 2" finder EPs to locate a target, then Barlow for a better look, e.g.
I have two older Celestron Shorty Barlows, I use them with some pretty good eyepieces and telescopes, I have other Barlows but the Celestron Shorty's are my favorites. I only use them for high magnification, when 3.5 mm Nagler or 4mm TMB Planetary is not enough, I think your current Barlow will do a good job.