I have to say if I was buying a soldering iron for this purpose I'd buy a gas powered one like the portasol pro piezo. More powerful and controllable than any electric iron I've used costing less than £200. I'm an electronic engineer by trade too and I've used pretty much everything, Weller, Antex, Metcal (have one of these on long term loan and it's splendid) - best I've used is the one our place has at the minute who's name escapes me. But I know it's north of £300. Gas irons are very handy bits of kit, just be careful which way the heater port (on the side near the tip) is pointed when working in tight spaces like a control cavity, near plastic parts or guitar finishes...