Used a lot of the #3 over the years, cheap and readily available but now I use OEM as much as possible. Loosening the #2 style can be a pain using regular pliers, what I usually use, so I bought a set of hose clamp pliers. These were worse. I had a set of regular pliers modified to provide a larger gripping surface and with the little I've used them so far they've been an improvement. These were a set of roadkill that now live a new life.