A lot depends on HOW you plan to carry (pocket, inside belt, outside belt, ankle, etc). What model Ruger did you have that was too big?
The right holster and belt can go a long way to making carry comfortable. Concealment is sometimes more of a challenge, though. It all depends on how you choose to dress and what kind of trade-off you are willing to make between convenience/comfort and weapon effectivness.
Of the choices in the Bersa line, the three I'd look at most closely are the 380cc (8+1 round of .380), which is pocketable but still a bit larger than you might want for everyday pocket carry, the BP9cc which is a single-stack 9mm, or the UC 9 Pro, a 13+1 9mm.
There are other good choices out there but since this is a Bersa forum I'm assuming you were interested in that brand and not others.