I have the Lisle with the flat/wide tips; no issues. I wish they made a few more variations, but it works.
I don't understand why most have pointed tips. I realize that it's easier to make, but it's not a good design for the job. I get that it doesn't matter if you are changing the hose, you don't care if you poke a hole in it, but that's just a stupid design IMO- because you don't always need to change the hose, and you don't want to risk putting a hole in it if you're not going to change it. Plus, a flat tip is better for breaking free a hose, with the "no puncture" benefit.