They SUCK! I mean, if you would like a pair, they are great, in fact I have a pair I will sell you.
I got a pair of 20x80 steiner last year. I hate them. Their uses are VERY,VERY limited. I will say this, if you are glassing for, lets say, shed antlers (since they wont move) and you are, lets say, in the vehicle (cause you will need the window to rest them on) they are OK. The individual eye adjustments are terrible. You definately need them on a tripod or rock because where you need to adjust the focus is in the back 1% of the total weight of optic. They DO gather light good. Clarity is "fair"
I have a pair of 10x50 swarovski I use all the time. I hardly ever take steiners out of the safe.