Chemwick. Not as good on two sided plated through holes but usually works well enough.

You mean a desoldering bulb ? Those aren't that good. For plated through, something like a Hakko 808 works well. On lead free, you have to turn the heat all the way up. Also, when you see it melt, do not push the vacuum button tight away or else you will have an air pocket in there and solder at the top where you cant get a good thermal connection to it.

In any case, if it is lead free the first thing to do is to add some 83/37 to the connection.