I'm in the B-1. OPSTEMPO wasn't too oppressive when I was in an ops squadron...6 months deployed, a year at home. I'm still waiting to see what it will be like under Global Strike. There's a lot of options on the table regarding 3 month deployments, deploying one squadron to two geographically separated areas, rainbowing squadrons in various theaters, etc...so honestly, no one actually knows what the OPSTEMPO will look like for the next year or so.
At home, the work load is significant, but not crushing. I've been at the schoolhouse for a while, and honestly the biggest adjustment is the constant thrash that the schedule becomes when you're dealing with student lines instead of normal continuation training lines. But still, it's rare to stay much past 1800 if you're not on the night shift, and working weekends is very rare for most of us.
The family life is relatively stable. There are only two bases with B-1s, so there isn't much PCSing in the early part of your career (unless you draw the ALO or UPT card). Because the community is so small, you'll quickly find people that you knew at your last assignment when you go to your next one. Almost half the people I'm at the schoolhouse with are people I deployed with from Ellsworth.
The B-1 is currently undergoing the largest upgrade since the fleet was introduced. We're replacing all the green-screen CRTs with full-color LCD displays, we're opening a lot of the software to the pilots (who used to have to just trust the WSOs that things were set correctly), we're finally on Link-16, and we got some really nice upgrades to the targeting capabilities. I see the B-1 as being in service for at least the next 20 years or so, depending on how long it will take to get the B-21 online and what capabilities it eventually brings to the table.
Community morale is actually pretty high in the B-1 from what I've seen, although like every other platform we are hemorraging our fair share of pilots.
Finally, if you go to the B-1, you want to go to Ellsworth. You'll end up back at Dyess eventually, but Ellsworth is a hidden gem tucked away in the Black Hills. There's something new to see or do almost every weekend, and the winters aren't as brutal as people like to pretend.