we have a Viking 6 man. never had to use it thankfully but reputation is good. one thing about a viking is that service interval is every 4 years and runs about 1100 or so to get serviced. many other brands I've heard get serviced every year and run about 300. so expense is the same, but either lumped together or spread out.
I had a Givens 8 man life raft on a 38 ft. Silverton C.
It certainly wasn't the cheapest raft around, but it was rated pretty good after some serious testing, offshore. It had a deep ballast, which filled with water, when inflated, to prevent capsizing. Fortunately, I never got to find out if it worked well.