Are any of the so-called "universal" sight pushers any good, or is model specific the only way to go? I'm not constantly changing sights on the same model of gun, but I like to tinker and customize things that I buy, so I do swap out the sights on a good deal of the different handguns that pass through my hands. Right now I'm using just the old drift and hammer method, which is alright but a little awkward, but if I could find a universal pusher that is any good I'd probably like the precision and (Hopefully) ease of it. Is there such a thing out there, or should I just keep using the old method?