Thanks! I would love the Canon 17-55, but way out of my price league right now. I have been eyeing the Tamron, too, and will get it eventually, but I like primes for portraits and this one is a good price (also, my 50 1.8, though it still takes wonderfully sharp images, lost it's AF last year.)
So . . . today's update. I was stricter about focal length (or filling the frame) and in better light and was much happier with what I am seeing! I am going to try some more this afternoon, but I am getting more hopeful about keeping this thing (though I am still tempted by the Sigma -- I just like the 35 fl and price, but 1.4 is appealing, too.)
Thanks again for all the input and for encouraging me to give it another try. Like I said, I've never had a problem with a lens or returned one, so really hoping this is the ticket. This would give me a wider prime for group shots and then my 85 for individuals (though I know I can use the 35 for individual, too.) That covers most of my needs for now (considering I still have the 50 if desperate.)