Hi guys,
I have been using my ZD desoldering iron for a pretty long time. It is just one like below:

You may find it under different brands, models (some with additional: iron tool or hot air tool).
The problem is that I often get tempted to get something better so here we have this thread

First of all, let's talk about pumps. There are some that use electric pump, and some that need shop air.
What's the difference in performance in real word scenario? I don't have the shop air pump but I may consider it, because it has other useful uses.
To be honest with you, I don't lack that much pressure with ZD, but it's biggest flaw is it's low thermal capacity. I know the mass of the tip is huge compared to the standard soldering iron tip but the heating element isn't very effective at all. To melt some lead free solder joints on a multi layer PCB or on a ground plane I need to rise the temp up. which is always risky. Of course, I could get help myself with soldering iron or some preheater, but on the other hand the ZD desoldering tip itself looks crap compared to the most recent type from Pace.
Does anyone have some hands-on experience on this topic?