Amen to the above - get a 3" unless you have some unusual carry method in mind that needs a 2", such as a small fanny pack built for that barrel or you're gonna do front-pocket carry (not recommended, at least not by me).
With most carry methods including IWB, Shoulder, fanny pack, even ankle, there's no downside to the 3". The upsides are greater recoil control, and if you want to carry 38+P hollowpoints of any sort for defense they are more likely to open up.