I use 43"-45" and 60" umbrellas for wedding work, and I tend to have issues with them dying prematurely after drops. My longest-lasting umbrella was a PCB 60" that died simply after use, never dropped. Spines broke.
I think the last design I got was Photogenic Eclipse 60", but I found that they were critically flawed in that the black backing tears very early in their lifetime and they become white shoot-thrus when that happens.
So now I just ordered Adorama's 60" 16-spine white bounce.
Impact (BHphoto) is Okay, not great. I have a pair of 43" from them right now.
Other suggestions for more durable, longer-lasting ones, preferably with no critical flaws and possibly with a white liner on the black backing instead of just a plain black backing that absorbs light?

