All things being equal, I would chose a Brother over another potential provider.
There are Brothers in my Lodge who I would go to for work on my home who would NOT be the lowest bidder on any job they might be in the running for, but their level of craftsmanship and the way they work and how they stand behind their work would be worth more. That being said the work I have had them do did cost more than the competitive bids, but was discounted off of their normal fees, and they were willing to have me buy the materials myself (as my Son-in-Law is in sales for a Building Supply company and gets me the materials at cost.) It is like most things, you get what you pay for. Another Brother who is a professional photographer did the photography for my Son's Wedding. Having used him in the past before I was a Mason, I know he gave a significant discount, but he was still a bit above what others in the area charge. For the quality of work, however, again, you get what you pay for.