Preference and cost / value.Any reason not to go with an Oregon bar and chain from HD, versus Stihl OEM?
If you are considering Oregon, make sure that you compare their better bars against the STIHL guide bars, not just their cheapest:
https://www.oregonproducts.com/en/c...MI77KK0ru-6AIVBZSzCh1IDw1xEAAYASAAEgJocvD_BwE
No reason that you can't run Oregon chain on a STIHL bar, or vice-versa, as long as the pitch, gauge, and drive link count are the same. It is always a good idea to have more than one chain: you can buy one of each, and form your own opinions on them.
Philbert