Unger : Toys 'r Us Squeegees
Ettore : Pro Squeegees
Ettore Pro Grip here, I've never since touched the Unger Ergotech
Tim,
I find the Unger Ergotech fine, I've used it for the past seven years, but based on your post I'm going to order an Ettore Pro Grip.
I've used them for quite a long time too, don't get me wrong, they would do the job, but when I switched I really thoroughly enjoyed the Ettore so so much more then the Unger, and I wouldn't recommend anything else now. I think it's the channel that does it and the overall balance. The rubber sits much better in the Ettore's channel.

btw Tosh, I would get some new rubber to go along with them, if you are using Unger rubbers now, try Ettore or SYR, Ettore is by far the best, but doesn't last as long. SYR I found is a perfect balance. Buy them at Soap National.
I found the Unger rubbers hit and miss, mostly miss.