It depends how much of a road warrior he is. I watched the Canadian Women's Open at Glen Arbour for two days: pretty, manicured parkland course. Some nice ups and downs, and it's only 20-30 minutes from downtown Halifax. I've played Chester 20 times: wonderful scenery on the opening holes -- beautiful views of Mahone Bay -- and a very pleasant round. Nothing too interesting architecturally, but it's an easy hour from Halifax. Very enjoyable, and a lot less expensive than Glen Arbour.
If your brother LOVES golf, cares about the quality of the course, and is willing to drive a long way for a thrilling golf experience, then he's got to go to Cabot Links. Staying with relatives in Chester last summer, I drove 4.5 hours to play Cabot midday, then turned around and drove home. It was more than worth it. The setting, the views, the firm & fast fairways and greens, the wind... This summer I persuaded my wife and daughter to come, so we spent the night at Cabot. The course was even better the second time around. I keep a photo of the view from the first tee on my laptop desktop, just for the escape.
Again, if he's a serious golfer, a road warrior and he values a great course over pretty green one with cookie-cutter bunkers, Cabot would provide an experience to remember the rest of his life. It will be about 3.5 hours from Halifax, though.