If it's for soldering really chunky stuff, or for the lead/stained glass that the OP was asking about, I THINK the 100 Watt version is probably not meaty enough. 200 Watt version maybe OK. Basically, for soldering heavy stuff that tends to "leak" the heat away quickly, the more Watts the better. I notice that the other one posted above was 300 Watt
As posted previously, purely personal, but I don't much like the "cranked" bit, I prefer straight. But that's just me. They're certainly popular and with practice you could no doubt get on with it OK.
AES