Free: Contests & Raffles.
I would get the standard (no ports). The additional length does not give that much velocity and makes it a huge pain to carry. The ports/additions also create problems. I know there is a ton of info out there. I have a 29 and a 20 and shoot/carry them very often. I also reload extensively. After much searching, I bought a Storm Lake barrel and have been extremely happy with it. I wanted to try something new for my 29 and bought a lone wolf. It was not machined well and would lock the slide back (would catch on the breach). To the company's credit, they offered a replacement or refund. They have great customer service, but I only buy Storm Lake Barrels now. FYI for what it is worth.