Teresa, the problem with trying to overwinter Brugs in zone 6 is that they take such a long time in the spring/summer to get going and bloom, when they've been kept dormant for the winter. I think Doris just showed her first bloom on a small plant this last week. They really need the night temps to stay above about 60 before they'll get up to speed.
If you can manage to keep just one per year going and growing indoors, in a sunny window then you'd get to appreciate the full wonders - they bloom every 4 to 6 weeks for me, sometimes year 'round. But if they go dormant from cold weather, it takes them about 2 months to wake up and start making flowers again.
They take quite kindly to being pruned back some between bloom cycles, so you could keep one to a reasonable size (large house plant, 4 to 5ft. tall and wide) Will need a sunny window and lots of water and fertilizer to keep blooming. But sure are well worth it.
