You mind sharing what is the lowest temp setting for the first one? Thanks
I have that one at work (only use it for heat shrink sleeving there) and it is evening here so I can't look. If you search around you may find some specs. What I remember is that you can regulate the heating part down to zero. Combined with the air flow you will get a temperature reading in the diplay.

The second one is a truly temperature controlled device. That is you set a temperature in the display with the buttons (100-450 C), and it will regulate the air temperature to just that. Works well and I use that one for some electronics re-work.

Do check that you buy one with the right voltage for your area. Mine is 230V, yours may be different (you do not have your location set in your profile).