Big +1 on the Sig P232SL, I had a Bersa too and quickly sold it because I dislike having manual safeties on my SA/DA or DAO carry weapons, just strikes me as unnecessary. It was a fun gun to shoot though.
It all really depends on what you are looking for in a carry gun, and where you live.
If it is hot and you will be wearing t-shirts/shorts and the like for the majority of the year, I would go with the tiny gun option. Your most obvious choices would be the new LCP or the P3AT.
If you live in a colder climate, the larger guns can be a better option, this opens you up to the P232, the Walther PPK(its slightly smaller though much heavier), the bersa and others. If this is the group your looking at I would highly reccomend the P232 as the ideal carry gun because it isn't too heavy or too light, it has good sights(get the night sights) and it doesn't have an annoying manual safety or slide release leaver to add to the width of the pistol.
Now if you live in Michigan(and other hot/cold midwest states) and get a mixture of annoyingly hot and painfully cold, your just better off with two or more carry guns for different parts of the year. I prefer to carry the P232 during the summer months and in the winter months I carry my XD45 compact.
To sum it up, if you've got the cash, get the Sig. If you want a similar and cheaper option get the bersa. If you wanna go tiny get the LCP/P3AT. All are great guns and you really can't go wrong.