dealers choice. In my opinion, I would use a particular type of running pullout stitch. Many would think me crazy, too. The staples will almost certainly not promote "less scaring", compared to other inert suture material.
That said, the scar has little to do with the above. That is a combination of your personal biology, the total damage to the skin edges, how well the skin was put together. Staples can put the skin together as well as just about any other technique. But they are not idiot proof devices by any means. If the skin edge is folding in on itself, or there is more than a 2mm overlap (think roof shingles), or a gap of 4mm or more... the wound will scar more. For the 1st `0 days or so, the wound needs to be watched closely for infection. Obvious usually, it is usually painful/red/draining.... but can be deep and indolent.
So, what to do. Neosporin to the wound twice daily. Assuming no major gaps/infection the staples should come out about day 7 at the latest, to minimize the "rail roading" pattern that can occur with staples/stitches. 7 days is kinda early, don't use the arm much if it stresses the scar. Then once a day, using the neosporin, gently massage the wound/scar. At this point, the wound will start to contract, crossing a joint, you need to ensure that the scar will not limit range of motion. Switch to cocoa butter and continue 2x-4x gently massages. Keep the wound out of direct sun of any kind for 6 months. If you must, use liberal amounts of high spf sunscreen. Scar reducing "kits", creams, myderma, have varied success. Seem to work best in fair skinned persons.